100001210211021 has 32 divisors (see below), whose sum is σ = 161247686750208. Its totient is φ = 53889200830080.

The previous prime is 100001210211011. The next prime is 100001210211047. The reversal of 100001210211021 is 120112012100001.

It is not a de Polignac number, because 100001210211021 - 2¹⁸ = 100001209948877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100001210210988 and 100001210211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001210211011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1458006856 + ... + 1458075441.

It is an arithmetic number, because the mean of its divisors is an integer number (5038990210944).

Almost surely, 2^{100001210211021} is an apocalyptic number.

It is an amenable number.

100001210211021 is a deficient number, since it is larger than the sum of its proper divisors (61246476539187).

100001210211021 is a wasteful number, since it uses less digits than its factorization.

100001210211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916082401.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100001210211021 its reverse (120112012100001), we get a palindrome (220113222311022).

The spelling of 100001210211021 in words is "one hundred trillion, one billion, two hundred ten million, two hundred eleven thousand, twenty-one".