63121221406252 has 48 divisors (see below), whose sum is σ = 112166465886720. Its totient is φ = 31074855436800.

The previous prime is 63121221406183. The next prime is 63121221406277. The reversal of 63121221406252 is 25260412212136.

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, 1141590727 + ... + 1141646017.

It is an arithmetic number, because the mean of its divisors is an integer number (2336801372640).

Almost surely, 2^{63121221406252} is an apocalyptic number.

It is an amenable number.

63121221406252 is a deficient number, since it is larger than the sum of its proper divisors (49045244480468).

63121221406252 is a wasteful number, since it uses less digits than its factorization.

63121221406252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60622 (or 60620 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 63121221406252 its reverse (25260412212136), we get a palindrome (88381633618388).

The spelling of 63121221406252 in words is "sixty-three trillion, one hundred twenty-one billion, two hundred twenty-one million, four hundred six thousand, two hundred fifty-two".