212020010121 has 32 divisors (see below), whose sum is σ = 290400110208. Its totient is φ = 137550758400.

The previous prime is 212020010101. The next prime is 212020010141. The reversal of 212020010121 is 121010020212.

It is an interprime number because it is at equal distance from previous prime (212020010101) and next prime (212020010141).

It is not a de Polignac number, because 212020010121 - 2⁵ = 212020010089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212020010097 and 212020010106.

It is not an unprimeable number, because it can be changed into a prime (212020010101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9266131 + ... + 9288983.

It is an arithmetic number, because the mean of its divisors is an integer number (9075003444).

Almost surely, 2^212020010121 is an apocalyptic number.

It is an amenable number.

212020010121 is a deficient number, since it is larger than the sum of its proper divisors (78380100087).

212020010121 is a wasteful number, since it uses less digits than its factorization.

212020010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23481.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212020010121 its reverse (121010020212), we get a palindrome (333030030333).

The spelling of 212020010121 in words is "two hundred twelve billion, twenty million, ten thousand, one hundred twenty-one".