10202101021021 has 8 divisors (see below), whose sum is σ = 12556432025984. Its totient is φ = 8071992016560.

The previous prime is 10202101020977. The next prime is 10202101021087. The reversal of 10202101021021 is 12012010120201.

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

It is a cyclic number.

It is not a de Polignac number, because 10202101021021 - 2⁷ = 10202101020893 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 10202101020992 and 10202101021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202102021021) 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, 56055500025 + ... + 56055500206.

It is an arithmetic number, because the mean of its divisors is an integer number (1569554003248).

Almost surely, 2^{10202101021021} is an apocalyptic number.

It is an amenable number.

10202101021021 is a deficient number, since it is larger than the sum of its proper divisors (2354331004963).

10202101021021 is a wasteful number, since it uses less digits than its factorization.

10202101021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112111000251.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10202101021021 its reverse (12012010120201), we get a palindrome (22214111141222).

The spelling of 10202101021021 in words is "ten trillion, two hundred two billion, one hundred one million, twenty-one thousand, twenty-one".