212032121021 has 64 divisors (see below), whose sum is σ = 259793049600. Its totient is φ = 169229039616.

The previous prime is 212032121003. The next prime is 212032121029. The reversal of 212032121021 is 120121230212.

It is not a de Polignac number, because 212032121021 - 2⁶ = 212032120957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212032121029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 266037395 + ... + 266038191.

It is an arithmetic number, because the mean of its divisors is an integer number (4059266400).

Almost surely, 2^212032121021 is an apocalyptic number.

It is an amenable number.

212032121021 is a deficient number, since it is larger than the sum of its proper divisors (47760928579).

212032121021 is a wasteful number, since it uses less digits than its factorization.

212032121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212032121021 its reverse (120121230212), we get a palindrome (332153351233).

The spelling of 212032121021 in words is "two hundred twelve billion, thirty-two million, one hundred twenty-one thousand, twenty-one".