21210430650236 has 6 divisors (see below), whose sum is σ = 37118253637920. Its totient is φ = 10605215325116.

The previous prime is 21210430650203. The next prime is 21210430650259. The reversal of 21210430650236 is 63205603401212.

It is a junction number, because it is equal to n+sod(n) for n = 21210430650196 and 21210430650205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2651303831276 + ... + 2651303831283.

It is an arithmetic number, because the mean of its divisors is an integer number (6186375606320).

Almost surely, 2^{21210430650236} is an apocalyptic number.

It is an amenable number.

21210430650236 is a deficient number, since it is larger than the sum of its proper divisors (15907822987684).

21210430650236 is a wasteful number, since it uses less digits than its factorization.

21210430650236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302607662563 (or 5302607662561 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 21210430650236 in words is "twenty-one trillion, two hundred ten billion, four hundred thirty million, six hundred fifty thousand, two hundred thirty-six".