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22021220001 = 3111953662671
BaseRepresentation
bin10100100000100100…
…010010011010100001
32002211200210212211210
4110200210102122201
5330044413020001
614041051100333
71406464165404
oct244044223241
962750725753
1022021220001
11938044a580
124326a416a9
1320cc3717c1
1410cc905d3b
1588d420dd6
hex5209126a1

22021220001 has 32 divisors (see below), whose sum is σ = 34352916480. Its totient is φ = 12405182400.

The previous prime is 22021219973. The next prime is 22021220029. The reversal of 22021220001 is 10002212022.

It is an interprime number because it is at equal distance from previous prime (22021219973) and next prime (22021220029).

It is not a de Polignac number, because 22021220001 - 26 = 22021219937 is a prime.

It is a super-4 number, since 4×220212200014 (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22021220701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298105 + ... + 364566.

It is an arithmetic number, because the mean of its divisors is an integer number (1073528640).

Almost surely, 222021220001 is an apocalyptic number.

It is an amenable number.

22021220001 is a deficient number, since it is larger than the sum of its proper divisors (12331696479).

22021220001 is a wasteful number, since it uses less digits than its factorization.

22021220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662757.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22021220001 its reverse (10002212022), we get a palindrome (32023432023).

The spelling of 22021220001 in words is "twenty-two billion, twenty-one million, two hundred twenty thousand, one".

Divisors: 1 3 11 19 33 53 57 159 209 583 627 1007 1749 3021 11077 33231 662671 1988013 7289381 12590749 21868143 35121563 37772247 105364689 138498239 386337193 415494717 667309697 1159011579 2001929091 7340406667 22021220001