1011022001001 has 12 divisors (see below), whose sum is σ = 1461875326912. Its totient is φ = 673317645336.

The previous prime is 1011022000991. The next prime is 1011022001029. The reversal of 1011022001001 is 1001002201101.

It is a happy number.

It is not a de Polignac number, because 1011022001001 - 2⁷ = 1011022000873 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 (1011022001051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58075981 + ... + 58093386.

Almost surely, 2^{1011022001001} is an apocalyptic number.

It is an amenable number.

1011022001001 is a deficient number, since it is larger than the sum of its proper divisors (450853325911).

1011022001001 is a wasteful number, since it uses less digits than its factorization.

1011022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116170340 (or 116170337 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011022001001 its reverse (1001002201101), we get a palindrome (2012024202102).

The spelling of 1011022001001 in words is "one trillion, eleven billion, twenty-two million, one thousand, one".