100121021201 has 4 divisors (see below), whose sum is σ = 100312457712. Its totient is φ = 99929584692.

The previous prime is 100121021197. The next prime is 100121021251. The reversal of 100121021201 is 102120121001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100121021201 - 2² = 100121021197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121021251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95717471 + ... + 95718516.

It is an arithmetic number, because the mean of its divisors is an integer number (25078114428).

Almost surely, 2^100121021201 is an apocalyptic number.

It is an amenable number.

100121021201 is a deficient number, since it is larger than the sum of its proper divisors (191436511).

100121021201 is an equidigital number, since it uses as much as digits as its factorization.

100121021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191436510.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121021201 its reverse (102120121001), we get a palindrome (202241142202).

The spelling of 100121021201 in words is "one hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred one".