121012120213210 has 32 divisors (see below), whose sum is σ = 237192540537600. Its totient is φ = 44275940896320.

The previous prime is 121012120213177. The next prime is 121012120213301. The reversal of 121012120213210 is 12312021210121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10981130626 + ... + 10981141645.

It is an arithmetic number, because the mean of its divisors is an integer number (7412266891800).

Almost surely, 2^{121012120213210} is an apocalyptic number.

121012120213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012120213210 is a deficient number, since it is larger than the sum of its proper divisors (116180420324390).

121012120213210 is a wasteful number, since it uses less digits than its factorization.

121012120213210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21962272326.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121012120213210 its reverse (12312021210121), we get a palindrome (133324141423331).

The spelling of 121012120213210 in words is "one hundred twenty-one trillion, twelve billion, one hundred twenty million, two hundred thirteen thousand, two hundred ten".