1021010021011 has 4 divisors (see below), whose sum is σ = 1021020248592. Its totient is φ = 1020999793432.

The previous prime is 1021010020837. The next prime is 1021010021069. The reversal of 1021010021011 is 1101200101201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021010021011 - 2³⁵ = 986650282643 is a prime.

It is a super-2 number, since 2×1021010021011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021010021611) 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, 4962556 + ... + 5164201.

It is an arithmetic number, because the mean of its divisors is an integer number (255255062148).

Almost surely, 2^{1021010021011} is an apocalyptic number.

1021010021011 is a deficient number, since it is larger than the sum of its proper divisors (10227581).

1021010021011 is a wasteful number, since it uses less digits than its factorization.

1021010021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227580.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021010021011 its reverse (1101200101201), we get a palindrome (2122210122212).

The spelling of 1021010021011 in words is "one trillion, twenty-one billion, ten million, twenty-one thousand, eleven".