21023212114 has 8 divisors (see below), whose sum is σ = 32387110668. Its totient is φ = 10227508560.

The previous prime is 21023212103. The next prime is 21023212139. The reversal of 21023212114 is 41121232012.

It can be written as a sum of positive squares in 2 ways, for example, as 15608754225 + 5414457889 = 124935^2 + 73583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21023212091 and 21023212100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142048657 + ... + 142048804.

Almost surely, 2^21023212114 is an apocalyptic number.

21023212114 is a deficient number, since it is larger than the sum of its proper divisors (11363898554).

21023212114 is a wasteful number, since it uses less digits than its factorization.

21023212114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284097500.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21023212114 its reverse (41121232012), we get a palindrome (62144444126).

The spelling of 21023212114 in words is "twenty-one billion, twenty-three million, two hundred twelve thousand, one hundred fourteen".