1020122999 has 8 divisors (see below), whose sum is σ = 1166851488. Its totient is φ = 873643680.

The previous prime is 1020122993. The next prime is 1020123001. The reversal of 1020122999 is 9992210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020122999 - 2⁸ = 1020122743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020122993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53432 + ... + 69965.

It is an arithmetic number, because the mean of its divisors is an integer number (145856436).

Almost surely, 2^1020122999 is an apocalyptic number.

1020122999 is a deficient number, since it is larger than the sum of its proper divisors (146728489).

1020122999 is a wasteful number, since it uses less digits than its factorization.

1020122999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124585.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1020122999 is about 31939.3644113342. The cubic root of 1020122999 is about 1006.6631698902.

The spelling of 1020122999 in words is "one billion, twenty million, one hundred twenty-two thousand, nine hundred ninety-nine".