121211667150020 has 48 divisors (see below), whose sum is σ = 254732182961088. Its totient is φ = 48448927094400.

The previous prime is 121211667150017. The next prime is 121211667150053. The reversal of 121211667150020 is 20051766112121.

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, 214004195 + ... + 214569845.

It is an arithmetic number, because the mean of its divisors is an integer number (5306920478356).

Almost surely, 2^{121211667150020} is an apocalyptic number.

121211667150020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121211667150020 is an abundant number, since it is smaller than the sum of its proper divisors (133520515811068).

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

121211667150020 is a wasteful number, since it uses less digits than its factorization.

121211667150020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573540 (or 573538 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 121211667150020 in words is "one hundred twenty-one trillion, two hundred eleven billion, six hundred sixty-seven million, one hundred fifty thousand, twenty".