212022012011021 has 16 divisors (see below), whose sum is σ = 226416132264960. Its totient is φ = 198100545202560.

The previous prime is 212022012011011. The next prime is 212022012011057. The reversal of 212022012011021 is 120110210220212.

It is a cyclic number.

It is not a de Polignac number, because 212022012011021 - 2³⁰ = 212020938269197 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 (212022012011011) 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, 22319201 + ... + 30367593.

It is an arithmetic number, because the mean of its divisors is an integer number (14151008266560).

Almost surely, 2^{212022012011021} is an apocalyptic number.

It is an amenable number.

212022012011021 is a deficient number, since it is larger than the sum of its proper divisors (14394120253939).

212022012011021 is a wasteful number, since it uses less digits than its factorization.

212022012011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077756.

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

Adding to 212022012011021 its reverse (120110210220212), we get a palindrome (332132222231233).

The spelling of 212022012011021 in words is "two hundred twelve trillion, twenty-two billion, twelve million, eleven thousand, twenty-one".