10122111021 has 16 divisors (see below), whose sum is σ = 14868848448. Its totient is φ = 6073872000.

The previous prime is 10122111001. The next prime is 10122111023. The reversal of 10122111021 is 12011122101.

It is not a de Polignac number, because 10122111021 - 2¹⁷ = 10121979949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10122110988 and 10122111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122111023) 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, 1515136 + ... + 1521801.

It is an arithmetic number, because the mean of its divisors is an integer number (929303028).

Almost surely, 2^10122111021 is an apocalyptic number.

10122111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10122111021 is a deficient number, since it is larger than the sum of its proper divisors (4746737427).

10122111021 is a wasteful number, since it uses less digits than its factorization.

10122111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037052.

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

Adding to 10122111021 its reverse (12011122101), we get a palindrome (22133233122).

It can be divided in two parts, 101 and 22111021, that added together give a palindrome (22111122).

The spelling of 10122111021 in words is "ten billion, one hundred twenty-two million, one hundred eleven thousand, twenty-one".