100122101012221 has 4 divisors (see below), whose sum is σ = 101819085775200. Its totient is φ = 98425116249244.

The previous prime is 100122101012209. The next prime is 100122101012251. The reversal of 100122101012221 is 122210101221001.

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 100122101012221 - 2⁷ = 100122101012093 is a prime.

It is a super-2 number, since 2×100122101012221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100122101012195 and 100122101012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122101012251) 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, 848492381401 + ... + 848492381518.

It is an arithmetic number, because the mean of its divisors is an integer number (25454771443800).

Almost surely, 2^{100122101012221} is an apocalyptic number.

It is an amenable number.

100122101012221 is a deficient number, since it is larger than the sum of its proper divisors (1696984762979).

100122101012221 is an equidigital number, since it uses as much as digits as its factorization.

100122101012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696984762978.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100122101012221 its reverse (122210101221001), we get a palindrome (222332202233222).

The spelling of 100122101012221 in words is "one hundred trillion, one hundred twenty-two billion, one hundred one million, twelve thousand, two hundred twenty-one".