10212101010021 has 16 divisors (see below), whose sum is σ = 13700144304000. Its totient is φ = 6766137741888.

The previous prime is 10212101009993. The next prime is 10212101010053. The reversal of 10212101010021 is 12001010121201.

It is not a de Polignac number, because 10212101010021 - 2³¹ = 10209953526373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212101009979 and 10212101010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212101014021) 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, 8858046 + ... + 9944303.

It is an arithmetic number, because the mean of its divisors is an integer number (856259019000).

Almost surely, 2^{10212101010021} is an apocalyptic number.

It is an amenable number.

10212101010021 is a deficient number, since it is larger than the sum of its proper divisors (3488043293979).

10212101010021 is a wasteful number, since it uses less digits than its factorization.

10212101010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18803468.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10212101010021 its reverse (12001010121201), we get a palindrome (22213111131222).

The spelling of 10212101010021 in words is "ten trillion, two hundred twelve billion, one hundred one million, ten thousand, twenty-one".