1021101119979 has 16 divisors (see below), whose sum is σ = 1412108816160. Its totient is φ = 655778073600.

The previous prime is 1021101119977. The next prime is 1021101120001. The reversal of 1021101119979 is 9799111011201.

It is a happy number.

It is not a de Polignac number, because 1021101119979 - 2¹ = 1021101119977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021101119979.

It is not an unprimeable number, because it can be changed into a prime (1021101119977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45528934 + ... + 45551355.

It is an arithmetic number, because the mean of its divisors is an integer number (88256801010).

Almost surely, 2^{1021101119979} is an apocalyptic number.

1021101119979 is a deficient number, since it is larger than the sum of its proper divisors (391007696181).

1021101119979 is a wasteful number, since it uses less digits than its factorization.

1021101119979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91080430.

The product of its (nonzero) digits is 10206, while the sum is 42.

The spelling of 1021101119979 in words is "one trillion, twenty-one billion, one hundred one million, one hundred nineteen thousand, nine hundred seventy-nine".