121100020123 has 8 divisors (see below), whose sum is σ = 122298750720. Its totient is φ = 119902529640.

The previous prime is 121100020103. The next prime is 121100020231. The reversal of 121100020123 is 321020001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100020123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100020103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113143 + ... + 504976.

It is an arithmetic number, because the mean of its divisors is an integer number (15287343840).

Almost surely, 2^121100020123 is an apocalyptic number.

121100020123 is a deficient number, since it is larger than the sum of its proper divisors (1198730597).

121100020123 is a wasteful number, since it uses less digits than its factorization.

121100020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620057.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121100020123 its reverse (321020001121), we get a palindrome (442120021244).

The spelling of 121100020123 in words is "one hundred twenty-one billion, one hundred million, twenty thousand, one hundred twenty-three".