121420441552 has 10 divisors (see below), whose sum is σ = 235252105538. Its totient is φ = 60710220768.

The previous prime is 121420441517. The next prime is 121420441567. The reversal of 121420441552 is 255144024121.

It can be written as a sum of positive squares in only one way, i.e., 113773988416 + 7646453136 = 337304^2 + 87444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3794388783 + ... + 3794388814.

Almost surely, 2^121420441552 is an apocalyptic number.

It is an amenable number.

121420441552 is a deficient number, since it is larger than the sum of its proper divisors (113831663986).

121420441552 is an equidigital number, since it uses as much as digits as its factorization.

121420441552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588777605 (or 7588777599 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 121420441552 its reverse (255144024121), we get a palindrome (376564465673).

The spelling of 121420441552 in words is "one hundred twenty-one billion, four hundred twenty million, four hundred forty-one thousand, five hundred fifty-two".