1012011219978 has 64 divisors (see below), whose sum is σ = 2306136752640. Its totient is φ = 293324328000.

The previous prime is 1012011219977. The next prime is 1012011219983. The reversal of 1012011219978 is 8799121102101.

It is a super-2 number, since 2×1012011219978² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012011219977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3367948 + ... + 3656103.

It is an arithmetic number, because the mean of its divisors is an integer number (36033386760).

Almost surely, 2^{1012011219978} is an apocalyptic number.

1012011219978 is an abundant number, since it is smaller than the sum of its proper divisors (1294125532662).

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

1012011219978 is a wasteful number, since it uses less digits than its factorization.

1012011219978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7024163.

The product of its (nonzero) digits is 18144, while the sum is 42.

The spelling of 1012011219978 in words is "one trillion, twelve billion, eleven million, two hundred nineteen thousand, nine hundred seventy-eight".