212202112120021 has 8 divisors (see below), whose sum is σ = 221430189063744. Its totient is φ = 202974193356000.

The previous prime is 212202112120013. The next prime is 212202112120147. The reversal of 212202112120021 is 120021211202212.

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

It is a cyclic number.

It is not a de Polignac number, because 212202112120021 - 2³ = 212202112120013 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 (212202112120001) 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, 36799480 + ... + 42173521.

It is an arithmetic number, because the mean of its divisors is an integer number (27678773632968).

Almost surely, 2^{212202112120021} is an apocalyptic number.

It is an amenable number.

212202112120021 is a deficient number, since it is larger than the sum of its proper divisors (9228076943723).

212202112120021 is a wasteful number, since it uses less digits than its factorization.

212202112120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79089851.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212202112120021 its reverse (120021211202212), we get a palindrome (332223323322233).

The spelling of 212202112120021 in words is "two hundred twelve trillion, two hundred two billion, one hundred twelve million, one hundred twenty thousand, twenty-one".