10101220101021 has 32 divisors (see below), whose sum is σ = 15450753372160. Its totient is φ = 5750259729984.

The previous prime is 10101220101013. The next prime is 10101220101043. The reversal of 10101220101021 is 12010102210101.

It is not a de Polignac number, because 10101220101021 - 2³ = 10101220101013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101220100988 and 10101220101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101220101421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5112810 + ... + 6807588.

It is an arithmetic number, because the mean of its divisors is an integer number (482836042880).

Almost surely, 2^{10101220101021} is an apocalyptic number.

It is an amenable number.

10101220101021 is a deficient number, since it is larger than the sum of its proper divisors (5349533271139).

10101220101021 is a wasteful number, since it uses less digits than its factorization.

10101220101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695865.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10101220101021 its reverse (12010102210101), we get a palindrome (22111322311122).

The spelling of 10101220101021 in words is "ten trillion, one hundred one billion, two hundred twenty million, one hundred one thousand, twenty-one".