121278671356 has 12 divisors (see below), whose sum is σ = 212240613592. Its totient is φ = 60638496048.

The previous prime is 121278671333. The next prime is 121278671413. The reversal of 121278671356 is 653176872121.

It is a super-2 number, since 2×121278671356² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 207166 + ... + 534298.

Almost surely, 2^121278671356 is an apocalyptic number.

It is an amenable number.

121278671356 is a deficient number, since it is larger than the sum of its proper divisors (90961942236).

121278671356 is a wasteful number, since it uses less digits than its factorization.

121278671356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419820 (or 419818 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The spelling of 121278671356 in words is "one hundred twenty-one billion, two hundred seventy-eight million, six hundred seventy-one thousand, three hundred fifty-six".