220212111000021 has 32 divisors (see below), whose sum is σ = 338743878536448. Its totient is φ = 124646014410240.

The previous prime is 220212110999981. The next prime is 220212111000023. The reversal of 220212111000021 is 120000111212022.

It is not a de Polignac number, because 220212111000021 - 2³⁰ = 220211037258197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212111000023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81691350 + ... + 84343943.

It is an arithmetic number, because the mean of its divisors is an integer number (10585746204264).

Almost surely, 2^{220212111000021} is an apocalyptic number.

220212111000021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220212111000021 is a deficient number, since it is larger than the sum of its proper divisors (118531767536427).

220212111000021 is a wasteful number, since it uses less digits than its factorization.

220212111000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166035901.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220212111000021 its reverse (120000111212022), we get a palindrome (340212222212043).

The spelling of 220212111000021 in words is "two hundred twenty trillion, two hundred twelve billion, one hundred eleven million, twenty-one", and thus it is an aban number.