100120021221002 has 4 divisors (see below), whose sum is σ = 150180031831506. Its totient is φ = 50060010610500.

The previous prime is 100120021221001. The next prime is 100120021221023. The reversal of 100120021221002 is 200122120021001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62710418458081 + 37409602762921 = 7918991^2 + 6116339^2 .

It is not an unprimeable number, because it can be changed into a prime (100120021221001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030005305249 + ... + 25030005305252.

Almost surely, 2^{100120021221002} is an apocalyptic number.

100120021221002 is a deficient number, since it is larger than the sum of its proper divisors (50060010610504).

100120021221002 is an equidigital number, since it uses as much as digits as its factorization.

100120021221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50060010610503.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100120021221002 its reverse (200122120021001), we get a palindrome (300242141242003).

The spelling of 100120021221002 in words is "one hundred trillion, one hundred twenty billion, twenty-one million, two hundred twenty-one thousand, two".