10210121112021 has 4 divisors (see below), whose sum is σ = 13613494816032. Its totient is φ = 6806747408012.

The previous prime is 10210121112017. The next prime is 10210121112029. The reversal of 10210121112021 is 12021112101201.

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 10210121112021 - 2² = 10210121112017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210121112029) 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, 1701686852001 + ... + 1701686852006.

It is an arithmetic number, because the mean of its divisors is an integer number (3403373704008).

Almost surely, 2^{10210121112021} is an apocalyptic number.

It is an amenable number.

10210121112021 is a deficient number, since it is larger than the sum of its proper divisors (3403373704011).

10210121112021 is an equidigital number, since it uses as much as digits as its factorization.

10210121112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403373704010.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10210121112021 its reverse (12021112101201), we get a palindrome (22231233213222).

The spelling of 10210121112021 in words is "ten trillion, two hundred ten billion, one hundred twenty-one million, one hundred twelve thousand, twenty-one".