121213223300 has 36 divisors (see below), whose sum is σ = 283265981796. Its totient is φ = 44755651200.

The previous prime is 121213223269. The next prime is 121213223347. The reversal of 121213223300 is 3322312121.

It can be written as a sum of positive squares in 6 ways, for example, as 6602537536 + 114610685764 = 81256^2 + 338542^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46619171 + ... + 46621770.

Almost surely, 2^121213223300 is an apocalyptic number.

121213223300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121213223300 is an abundant number, since it is smaller than the sum of its proper divisors (162052758496).

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

121213223300 is a wasteful number, since it uses less digits than its factorization.

121213223300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93240968 (or 93240961 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121213223300 its reverse (3322312121), we get a palindrome (124535535421).

The spelling of 121213223300 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred twenty-three thousand, three hundred".