100212010521 has 16 divisors (see below), whose sum is σ = 153728880000. Its totient is φ = 56879682048.

The previous prime is 100212010439. The next prime is 100212010571. The reversal of 100212010521 is 125010212001.

It is not a de Polignac number, because 100212010521 - 2⁹ = 100212010009 is a prime.

It is a super-2 number, since 2×100212010521² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100212010521.

It is not an unprimeable number, because it can be changed into a prime (100212010571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16010296 + ... + 16016553.

It is an arithmetic number, because the mean of its divisors is an integer number (9608055000).

Almost surely, 2^100212010521 is an apocalyptic number.

It is an amenable number.

100212010521 is a deficient number, since it is larger than the sum of its proper divisors (53516869479).

100212010521 is a wasteful number, since it uses less digits than its factorization.

100212010521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32027008.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 100212010521 its reverse (125010212001), we get a palindrome (225222222522).

The spelling of 100212010521 in words is "one hundred billion, two hundred twelve million, ten thousand, five hundred twenty-one".