121100103100 has 18 divisors (see below), whose sum is σ = 262787223944. Its totient is φ = 48440041200.

The previous prime is 121100103097. The next prime is 121100103127. The reversal of 121100103100 is 1301001121.

It is a super-2 number, since 2×121100103100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605500416 + ... + 605500615.

Almost surely, 2^121100103100 is an apocalyptic number.

121100103100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100103100 is an abundant number, since it is smaller than the sum of its proper divisors (141687120844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121100103100 is a wasteful number, since it uses less digits than its factorization.

121100103100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211001045 (or 1211001038 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 121100103100 its reverse (1301001121), we get a palindrome (122401104221).

The spelling of 121100103100 in words is "one hundred twenty-one billion, one hundred million, one hundred three thousand, one hundred".