1012021212021 has 4 divisors (see below), whose sum is σ = 1349361616032. Its totient is φ = 674680808012.

The previous prime is 1012021211951. The next prime is 1012021212067. The reversal of 1012021212021 is 1202121202101.

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.

It is a cyclic number.

It is not a de Polignac number, because 1012021212021 - 2²⁵ = 1011987657589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012021212091) 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, 168670202001 + ... + 168670202006.

It is an arithmetic number, because the mean of its divisors is an integer number (337340404008).

Almost surely, 2^{1012021212021} is an apocalyptic number.

It is an amenable number.

1012021212021 is a deficient number, since it is larger than the sum of its proper divisors (337340404011).

1012021212021 is an equidigital number, since it uses as much as digits as its factorization.

1012021212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337340404010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1012021212021 its reverse (1202121202101), we get a palindrome (2214142414122).

The spelling of 1012021212021 in words is "one trillion, twelve billion, twenty-one million, two hundred twelve thousand, twenty-one".