121100100022 has 32 divisors (see below), whose sum is σ = 205031567520. Its totient is φ = 53138426880.

The previous prime is 121100099941. The next prime is 121100100029. The reversal of 121100100022 is 220001001121.

It is a junction number, because it is equal to n+sod(n) for n = 121100099981 and 121100100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100100029) 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, 5013478 + ... + 5037574.

It is an arithmetic number, because the mean of its divisors is an integer number (6407236485).

Almost surely, 2^121100100022 is an apocalyptic number.

121100100022 is a deficient number, since it is larger than the sum of its proper divisors (83931467498).

121100100022 is a wasteful number, since it uses less digits than its factorization.

121100100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32016.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121100100022 its reverse (220001001121), we get a palindrome (341101101143).

It can be divided in two parts, 121100 and 100022, that added together give a palindrome (221122).

The spelling of 121100100022 in words is "one hundred twenty-one billion, one hundred million, one hundred thousand, twenty-two".