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2011222112021 = 19960164326153
BaseRepresentation
bin11101010001000110001…
…011011111011100010101
321010021022112020012121122
4131101012023133130111
5230422440330041041
64135535341453325
7265206646611563
oct35210613373425
97107275205548
102011222112021
11705a554a4731
12285956271245
131178714b8845
146d4b505aa33
15374b32e2c4b
hex1d4462df715

2011222112021 has 16 divisors (see below), whose sum is σ = 2027918390400. Its totient is φ = 1994602579200.

The previous prime is 2011222112017. The next prime is 2011222112069. The reversal of 2011222112021 is 1202112221102.

It is a cyclic number.

It is not a de Polignac number, because 2011222112021 - 22 = 2011222112017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011222142021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76889081 + ... + 76915233.

It is an arithmetic number, because the mean of its divisors is an integer number (126744899400).

Almost surely, 22011222112021 is an apocalyptic number.

It is an amenable number.

2011222112021 is a deficient number, since it is larger than the sum of its proper divisors (16696278379).

2011222112021 is a wasteful number, since it uses less digits than its factorization.

2011222112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27596.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2011222112021 its reverse (1202112221102), we get a palindrome (3213334333123).

The spelling of 2011222112021 in words is "two trillion, eleven billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".

Divisors: 1 199 601 643 26153 119599 127957 386443 5204447 15717953 16816379 76902157 3127872647 3346459421 10106643779 2011222112021