121054521544 has 32 divisors (see below), whose sum is σ = 247744909440. Its totient is φ = 54995140800.

The previous prime is 121054521487. The next prime is 121054521547. The reversal of 121054521544 is 445125450121.

It is not an unprimeable number, because it can be changed into a prime (121054521547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205824 + ... + 533359.

It is an arithmetic number, because the mean of its divisors is an integer number (7742028420).

Almost surely, 2^121054521544 is an apocalyptic number.

It is an amenable number.

121054521544 is an abundant number, since it is smaller than the sum of its proper divisors (126690387896).

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

121054521544 is a wasteful number, since it uses less digits than its factorization.

121054521544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741061 (or 741057 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 121054521544 its reverse (445125450121), we get a palindrome (566179971665).

The spelling of 121054521544 in words is "one hundred twenty-one billion, fifty-four million, five hundred twenty-one thousand, five hundred forty-four".