22211221202031 has 16 divisors (see below), whose sum is σ = 29813096798208. Its totient is φ = 14708637595200.

The previous prime is 22211221202029. The next prime is 22211221202039. The reversal of 22211221202031 is 13020212211222.

It is not a de Polignac number, because 22211221202031 - 2¹ = 22211221202029 is a prime.

It is a super-2 number, since 2×22211221202031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22211221201989 and 22211221202007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211221202039) 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, 27652566 + ... + 28444451.

It is an arithmetic number, because the mean of its divisors is an integer number (1863318549888).

Almost surely, 2^{22211221202031} is an apocalyptic number.

22211221202031 is a deficient number, since it is larger than the sum of its proper divisors (7601875596177).

22211221202031 is a wasteful number, since it uses less digits than its factorization.

22211221202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56097902.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22211221202031 its reverse (13020212211222), we get a palindrome (35231433413253).

The spelling of 22211221202031 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred two thousand, thirty-one".