121213021330 has 16 divisors (see below), whose sum is σ = 218350908864. Its totient is φ = 48447992880.

The previous prime is 121213021327. The next prime is 121213021373. The reversal of 121213021330 is 33120312121.

It is a junction number, because it is equal to n+sod(n) for n = 121213021298 and 121213021307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4638276 + ... + 4664335.

It is an arithmetic number, because the mean of its divisors is an integer number (13646931804).

Almost surely, 2^121213021330 is an apocalyptic number.

121213021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121213021330 is a deficient number, since it is larger than the sum of its proper divisors (97137887534).

121213021330 is a wasteful number, since it uses less digits than its factorization.

121213021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303921.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121213021330 its reverse (33120312121), we get a palindrome (154333333451).

The spelling of 121213021330 in words is "one hundred twenty-one billion, two hundred thirteen million, twenty-one thousand, three hundred thirty".