10212219978 has 48 divisors (see below), whose sum is σ = 21578011200. Its totient is φ = 3221618112.

The previous prime is 10212219973. The next prime is 10212220003. The reversal of 10212219978 is 87991221201.

It is not an unprimeable number, because it can be changed into a prime (10212219971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2959198 + ... + 2962646.

It is an arithmetic number, because the mean of its divisors is an integer number (449541900).

Almost surely, 2^10212219978 is an apocalyptic number.

10212219978 is an abundant number, since it is smaller than the sum of its proper divisors (11365791222).

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

10212219978 is a wasteful number, since it uses less digits than its factorization.

10212219978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4840 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 10212219978 in words is "ten billion, two hundred twelve million, two hundred nineteen thousand, nine hundred seventy-eight".