10021012011021 has 16 divisors (see below), whose sum is σ = 14598135889920. Its totient is φ = 6064124604720.

The previous prime is 10021012011011. The next prime is 10021012011053. The reversal of 10021012011021 is 12011021012001.

It is not a de Polignac number, because 10021012011021 - 2⁶ = 10021012010957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021012010988 and 10021012011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021012011011) 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, 230378125 + ... + 230421618.

It is an arithmetic number, because the mean of its divisors is an integer number (912383493120).

Almost surely, 2^{10021012011021} is an apocalyptic number.

10021012011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021012011021 is a deficient number, since it is larger than the sum of its proper divisors (4577123878899).

10021012011021 is a wasteful number, since it uses less digits than its factorization.

10021012011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460800416.

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

Adding to 10021012011021 its reverse (12011021012001), we get a palindrome (22032033023022).

The spelling of 10021012011021 in words is "ten trillion, twenty-one billion, twelve million, eleven thousand, twenty-one".