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22011202221 = 310337102679
BaseRepresentation
bin10100011111111110…
…000100101010101101
32002210222221221000220
4110133332010222231
5330034331432341
614040052241553
71406313063141
oct243776045255
962728857026
1022011202221
119375828018
1243236102b9
1320ca274b18
1410cb459221
1588c5e2a66
hex51ff84aad

22011202221 has 8 divisors (see below), whose sum is σ = 29376684480. Its totient is φ = 14659927392.

The previous prime is 22011202163. The next prime is 22011202229. The reversal of 22011202221 is 12220211022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22011202221 - 27 = 22011202093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011202229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3548241 + ... + 3554438.

It is an arithmetic number, because the mean of its divisors is an integer number (3672085560).

Almost surely, 222011202221 is an apocalyptic number.

It is an amenable number.

22011202221 is a deficient number, since it is larger than the sum of its proper divisors (7365482259).

22011202221 is a wasteful number, since it uses less digits than its factorization.

22011202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103715.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22011202221 its reverse (12220211022), we get a palindrome (34231413243).

The spelling of 22011202221 in words is "twenty-two billion, eleven million, two hundred two thousand, two hundred twenty-one".

Divisors: 1 3 1033 3099 7102679 21308037 7337067407 22011202221