1022120001 has 12 divisors (see below), whose sum is σ = 1687309312. Its totient is φ = 584068536.

The previous prime is 1022119981. The next prime is 1022120009. The reversal of 1022120001 is 1000212201.

It is not a de Polignac number, because 1022120001 - 2¹³ = 1022111809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8112001 + ... + 8112126.

Almost surely, 2^1022120001 is an apocalyptic number.

It is an amenable number.

1022120001 is a deficient number, since it is larger than the sum of its proper divisors (665189311).

1022120001 is a wasteful number, since it uses less digits than its factorization.

1022120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16224140 (or 16224137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1022120001 is about 31970.6115205825. The cubic root of 1022120001 is about 1007.3196260206.

Adding to 1022120001 its reverse (1000212201), we get a palindrome (2022332202).

The spelling of 1022120001 in words is "one billion, twenty-two million, one hundred twenty thousand, one".