1010121121021 has 4 divisors (see below), whose sum is σ = 1042705673344. Its totient is φ = 977536568700.

The previous prime is 1010121120913. The next prime is 1010121121073. The reversal of 1010121121021 is 1201211210101.

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 not a de Polignac number, because 1010121121021 - 2²⁷ = 1009986903293 is a prime.

It is a super-3 number, since 3×1010121121021³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010121120992 and 1010121121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010121125021) 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, 16292276115 + ... + 16292276176.

It is an arithmetic number, because the mean of its divisors is an integer number (260676418336).

Almost surely, 2^{1010121121021} is an apocalyptic number.

It is an amenable number.

1010121121021 is a deficient number, since it is larger than the sum of its proper divisors (32584552323).

1010121121021 is an equidigital number, since it uses as much as digits as its factorization.

1010121121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32584552322.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1010121121021 its reverse (1201211210101), we get a palindrome (2211332331122).

The spelling of 1010121121021 in words is "one trillion, ten billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-one".