121756553214 has 32 divisors (see below), whose sum is σ = 250483484160. Its totient is φ = 39436213632.

The previous prime is 121756553131. The next prime is 121756553231. The reversal of 121756553214 is 412355657121.

It is a super-2 number, since 2×121756553214² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1513899 + ... + 1592294.

It is an arithmetic number, because the mean of its divisors is an integer number (7827608880).

Almost surely, 2^121756553214 is an apocalyptic number.

121756553214 is an abundant number, since it is smaller than the sum of its proper divisors (128726930946).

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

121756553214 is a wasteful number, since it uses less digits than its factorization.

121756553214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106384.

The product of its digits is 252000, while the sum is 42.

The spelling of 121756553214 in words is "one hundred twenty-one billion, seven hundred fifty-six million, five hundred fifty-three thousand, two hundred fourteen".