21616213150120 has 32 divisors (see below), whose sum is σ = 48636993714120. Its totient is φ = 8646393859840.

The previous prime is 21616213150117. The next prime is 21616213150151. The reversal of 21616213150120 is 2105131261612.

It can be written as a sum of positive squares in 4 ways, for example, as 20722579466436 + 893633683684 = 4552206^2 + 945322^2 .

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, 1040694 + ... + 6656986.

Almost surely, 2^{21616213150120} is an apocalyptic number.

21616213150120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21616213150120 is an abundant number, since it is smaller than the sum of its proper divisors (27020780564000).

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

21616213150120 is a wasteful number, since it uses less digits than its factorization.

21616213150120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712525 (or 5712521 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 21616213150120 in words is "twenty-one trillion, six hundred sixteen billion, two hundred thirteen million, one hundred fifty thousand, one hundred twenty".