212201120120021 has 8 divisors (see below), whose sum is σ = 213010239322944. Its totient is φ = 211392383577760.

The previous prime is 212201120119999. The next prime is 212201120120063. The reversal of 212201120120021 is 120021021102212.

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 212201120120021 - 2²² = 212201115925717 is a prime.

It is a super-2 number, since 2×212201120120021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201120120921) 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, 94553945 + ... + 96772158.

It is an arithmetic number, because the mean of its divisors is an integer number (26626279915368).

Almost surely, 2^{212201120120021} is an apocalyptic number.

It is an amenable number.

212201120120021 is a deficient number, since it is larger than the sum of its proper divisors (809119202923).

212201120120021 is a wasteful number, since it uses less digits than its factorization.

212201120120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191330331.

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

Adding to 212201120120021 its reverse (120021021102212), we get a palindrome (332222141222233).

The spelling of 212201120120021 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty million, one hundred twenty thousand, twenty-one".