22222012202121 has 16 divisors (see below), whose sum is σ = 29704448252160. Its totient is φ = 14777167791360.

The previous prime is 22222012202107. The next prime is 22222012202227. The reversal of 22222012202121 is 12120221022222.

It is not a de Polignac number, because 22222012202121 - 2⁶ = 22222012202057 is a prime.

It is a super-2 number, since 2×22222012202121² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22222012202921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3187441 + ... + 7389438.

It is an arithmetic number, because the mean of its divisors is an integer number (1856528015760).

Almost surely, 2^{22222012202121} is an apocalyptic number.

It is an amenable number.

22222012202121 is a deficient number, since it is larger than the sum of its proper divisors (7482436050039).

22222012202121 is a wasteful number, since it uses less digits than its factorization.

22222012202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10578656.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222012202121 its reverse (12120221022222), we get a palindrome (34342233224343).

The spelling of 22222012202121 in words is "twenty-two trillion, two hundred twenty-two billion, twelve million, two hundred two thousand, one hundred twenty-one".