22121231010213 has 64 divisors (see below), whose sum is σ = 32025036718080. Its totient is φ = 13537940760000.

The previous prime is 22121231010199. The next prime is 22121231010247. The reversal of 22121231010213 is 31201013212122.

It is not a de Polignac number, because 22121231010213 - 2¹² = 22121231006117 is a prime.

It is a super-2 number, since 2×22121231010213² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121231010213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121231010413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112197148 + ... + 112394138.

It is an arithmetic number, because the mean of its divisors is an integer number (500391198720).

Almost surely, 2^{22121231010213} is an apocalyptic number.

It is an amenable number.

22121231010213 is a deficient number, since it is larger than the sum of its proper divisors (9903805707867).

22121231010213 is a wasteful number, since it uses less digits than its factorization.

22121231010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197478.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 22121231010213 its reverse (31201013212122), we get a palindrome (53322244222335).

The spelling of 22121231010213 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred thirty-one million, ten thousand, two hundred thirteen".