121213954142 has 8 divisors (see below), whose sum is σ = 181827811776. Its totient is φ = 60604683552.

The previous prime is 121213954117. The next prime is 121213954159. The reversal of 121213954142 is 241459312121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079918 + ... + 1186865.

It is an arithmetic number, because the mean of its divisors is an integer number (22728476472).

Almost surely, 2^121213954142 is an apocalyptic number.

121213954142 is a deficient number, since it is larger than the sum of its proper divisors (60613857634).

121213954142 is a wasteful number, since it uses less digits than its factorization.

121213954142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293522.

The product of its digits is 17280, while the sum is 35.

The spelling of 121213954142 in words is "one hundred twenty-one billion, two hundred thirteen million, nine hundred fifty-four thousand, one hundred forty-two".