10102211101021 has 8 divisors (see below), whose sum is σ = 10900185852024. Its totient is φ = 9307219434240.

The previous prime is 10102211101013. The next prime is 10102211101061. The reversal of 10102211101021 is 12010111220101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2457184900 + 10099753916121 = 49570^2 + 3178011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10102211101021 - 2³ = 10102211101013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102211100992 and 10102211101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102211101061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745764016 + ... + 745777561.

It is an arithmetic number, because the mean of its divisors is an integer number (1362523231503).

Almost surely, 2^{10102211101021} is an apocalyptic number.

It is an amenable number.

10102211101021 is a deficient number, since it is larger than the sum of its proper divisors (797974751003).

10102211101021 is a wasteful number, since it uses less digits than its factorization.

10102211101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491542111.

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

Adding to 10102211101021 its reverse (12010111220101), we get a palindrome (22112322321122).

The spelling of 10102211101021 in words is "ten trillion, one hundred two billion, two hundred eleven million, one hundred one thousand, twenty-one".