10101020120021 has 8 divisors (see below), whose sum is σ = 10540276802880. Its totient is φ = 9661770261792.

The previous prime is 10101020120017. The next prime is 10101020120033. The reversal of 10101020120021 is 12002102010101.

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

It is not a de Polignac number, because 10101020120021 - 2² = 10101020120017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101020119984 and 10101020120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101020120071) 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, 1441985 + ... + 4720313.

It is an arithmetic number, because the mean of its divisors is an integer number (1317534600360).

Almost surely, 2^{10101020120021} is an apocalyptic number.

It is an amenable number.

10101020120021 is a deficient number, since it is larger than the sum of its proper divisors (439256682859).

10101020120021 is a wasteful number, since it uses less digits than its factorization.

10101020120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412315.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10101020120021 its reverse (12002102010101), we get a palindrome (22103122130122).

The spelling of 10101020120021 in words is "ten trillion, one hundred one billion, twenty million, one hundred twenty thousand, twenty-one".