21212630034 has 16 divisors (see below), whose sum is σ = 42427895520. Its totient is φ = 7070437440.

The previous prime is 21212629987. The next prime is 21212630081. The reversal of 21212630034 is 43003621212.

It is an interprime number because it is at equal distance from previous prime (21212629987) and next prime (21212630081).

It is a junction number, because it is equal to n+sod(n) for n = 21212629986 and 21212630013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3882 + ... + 206010.

It is an arithmetic number, because the mean of its divisors is an integer number (2651743470).

Almost surely, 2^21212630034 is an apocalyptic number.

21212630034 is an abundant number, since it is smaller than the sum of its proper divisors (21215265486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21212630034 is a wasteful number, since it uses less digits than its factorization.

21212630034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219625.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 21212630034 in words is "twenty-one billion, two hundred twelve million, six hundred thirty thousand, thirty-four".