121820414403 has 16 divisors (see below), whose sum is σ = 162763364736. Its totient is φ = 81045669120.

The previous prime is 121820414377. The next prime is 121820414407. The reversal of 121820414403 is 304414028121.

It is not a de Polignac number, because 121820414403 - 2⁵ = 121820414371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121820414407) 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, 3999076 + ... + 4029422.

It is an arithmetic number, because the mean of its divisors is an integer number (10172710296).

Almost surely, 2^121820414403 is an apocalyptic number.

121820414403 is a deficient number, since it is larger than the sum of its proper divisors (40942950333).

121820414403 is a wasteful number, since it uses less digits than its factorization.

121820414403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33074.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 121820414403 in words is "one hundred twenty-one billion, eight hundred twenty million, four hundred fourteen thousand, four hundred three".