220212012212021 has 4 divisors (see below), whose sum is σ = 220216370566272. Its totient is φ = 220207653857772.

The previous prime is 220212012212011. The next prime is 220212012212089. The reversal of 220212012212021 is 120212210212022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220212012212021 - 2⁶ = 220212012211957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220212012211984 and 220212012212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212012212011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179101335 + ... + 2179202388.

It is an arithmetic number, because the mean of its divisors is an integer number (55054092641568).

Almost surely, 2^{220212012212021} is an apocalyptic number.

It is an amenable number.

220212012212021 is a deficient number, since it is larger than the sum of its proper divisors (4358354251).

220212012212021 is an equidigital number, since it uses as much as digits as its factorization.

220212012212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358354250.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220212012212021 its reverse (120212210212022), we get a palindrome (340424222424043).

The spelling of 220212012212021 in words is "two hundred twenty trillion, two hundred twelve billion, twelve million, two hundred twelve thousand, twenty-one".