1011402001 has 4 divisors (see below), whose sum is σ = 1044027904. Its totient is φ = 978776100.

The previous prime is 1011401987. The next prime is 1011402031. The reversal of 1011402001 is 1002041101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1002041101 = 397 ⋅2524033.

It is a cyclic number.

It is not a de Polignac number, because 1011402001 - 2¹³ = 1011393809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011402031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16312905 + ... + 16312966.

It is an arithmetic number, because the mean of its divisors is an integer number (261006976).

Almost surely, 2^1011402001 is an apocalyptic number.

It is an amenable number.

1011402001 is a deficient number, since it is larger than the sum of its proper divisors (32625903).

1011402001 is an equidigital number, since it uses as much as digits as its factorization.

1011402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32625902.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1011402001 is about 31802.5470835278. The cubic root of 1011402001 is about 1003.7863127421.

Adding to 1011402001 its reverse (1002041101), we get a palindrome (2013443102).

The spelling of 1011402001 in words is "one billion, eleven million, four hundred two thousand, one".