1021010123101 has 4 divisors (see below), whose sum is σ = 1021057232832. Its totient is φ = 1020963013372.

The previous prime is 1021010123083. The next prime is 1021010123123. The reversal of 1021010123101 is 1013210101201.

It is a happy number.

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 1021010123101 - 2⁵ = 1021010123069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021010123501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23522341 + ... + 23565706.

It is an arithmetic number, because the mean of its divisors is an integer number (255264308208).

Almost surely, 2^{1021010123101} is an apocalyptic number.

It is an amenable number.

1021010123101 is a deficient number, since it is larger than the sum of its proper divisors (47109731).

1021010123101 is an equidigital number, since it uses as much as digits as its factorization.

1021010123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47109730.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1021010123101 its reverse (1013210101201), we get a palindrome (2034220224302).

The spelling of 1021010123101 in words is "one trillion, twenty-one billion, ten million, one hundred twenty-three thousand, one hundred one".