21150063213100 has 36 divisors (see below), whose sum is σ = 46057812630424. Its totient is φ = 8430131191680.

The previous prime is 21150063213091. The next prime is 21150063213107. The reversal of 21150063213100 is 131236005112.

It is a happy number.

It is a super-2 number, since 2×21150063213100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (21150063213107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373647729 + ... + 373704328.

Almost surely, 2^{21150063213100} is an apocalyptic number.

21150063213100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21150063213100 is an abundant number, since it is smaller than the sum of its proper divisors (24907749417324).

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

21150063213100 is a wasteful number, since it uses less digits than its factorization.

21150063213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747352354 (or 747352347 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 21150063213100 its reverse (131236005112), we get a palindrome (21281299218212).

The spelling of 21150063213100 in words is "twenty-one trillion, one hundred fifty billion, sixty-three million, two hundred thirteen thousand, one hundred".