78901021001212 has 12 divisors (see below), whose sum is σ = 138080342130640. Its totient is φ = 39449494678176.

The previous prime is 78901021001197. The next prime is 78901021001249. The reversal of 78901021001212 is 21210012010987.

It is a super-2 number, since 2×78901021001212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253780833 + ... + 254091544.

Almost surely, 2^{78901021001212} is an apocalyptic number.

It is an amenable number.

78901021001212 is a deficient number, since it is larger than the sum of its proper divisors (59179321129428).

78901021001212 is a wasteful number, since it uses less digits than its factorization.

78901021001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507911220 (or 507911218 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 78901021001212 in words is "seventy-eight trillion, nine hundred one billion, twenty-one million, one thousand, two hundred twelve".