100212210001021 has 16 divisors (see below), whose sum is σ = 111692164282560. Its totient is φ = 89352872167680.

The previous prime is 100212210000913. The next prime is 100212210001049. The reversal of 100212210001021 is 120100012212001.

It is a cyclic number.

It is not a de Polignac number, because 100212210001021 - 2¹⁹ = 100212209476733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212210000992 and 100212210001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212210001061) 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, 80067975 + ... + 81309931.

It is an arithmetic number, because the mean of its divisors is an integer number (6980760267660).

Almost surely, 2^{100212210001021} is an apocalyptic number.

It is an amenable number.

100212210001021 is a deficient number, since it is larger than the sum of its proper divisors (11479954281539).

100212210001021 is a wasteful number, since it uses less digits than its factorization.

100212210001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491804.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100212210001021 its reverse (120100012212001), we get a palindrome (220312222213022).

The spelling of 100212210001021 in words is "one hundred trillion, two hundred twelve billion, two hundred ten million, one thousand, twenty-one".