20110212122021 has 8 divisors (see below), whose sum is σ = 22983614860224. Its totient is φ = 17236938206880.

The previous prime is 20110212121981. The next prime is 20110212122023. The reversal of 20110212122021 is 12022121201102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20110212122021 - 2¹⁸ = 20110211859877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110212122023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31871015 + ... + 32495876.

It is an arithmetic number, because the mean of its divisors is an integer number (2872951857528).

Almost surely, 2^{20110212122021} is an apocalyptic number.

It is an amenable number.

20110212122021 is a deficient number, since it is larger than the sum of its proper divisors (2873402738203).

20110212122021 is an equidigital number, since it uses as much as digits as its factorization.

20110212122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64411531.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20110212122021 its reverse (12022121201102), we get a palindrome (32132333323123).

The spelling of 20110212122021 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred twenty-two thousand, twenty-one".