1021012120019 has 32 divisors (see below), whose sum is σ = 1110715752960. Its totient is φ = 935524512000.

The previous prime is 1021012120003. The next prime is 1021012120069. The reversal of 1021012120019 is 9100212101201.

1021012120019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1021012120019 - 2⁴ = 1021012120003 is a prime.

It is a super-2 number, since 2×1021012120019² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021012120069) 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, 19893839 + ... + 19945095.

It is an arithmetic number, because the mean of its divisors is an integer number (34709867280).

Almost surely, 2^{1021012120019} is an apocalyptic number.

1021012120019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1021012120019 is a deficient number, since it is larger than the sum of its proper divisors (89703632941).

1021012120019 is a wasteful number, since it uses less digits than its factorization.

1021012120019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51611.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1021012120019 in words is "one trillion, twenty-one billion, twelve million, one hundred twenty thousand, nineteen".