102021111002021 has 8 divisors (see below), whose sum is σ = 103065993916704. Its totient is φ = 100976909909200.

The previous prime is 102021111001993. The next prime is 102021111002077. The reversal of 102021111002021 is 120200111120201.

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 102021111002021 - 2¹⁰ = 102021111000997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021111001987 and 102021111002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021111002521) 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, 170154671 + ... + 170753196.

It is an arithmetic number, because the mean of its divisors is an integer number (12883249239588).

Almost surely, 2^{102021111002021} is an apocalyptic number.

It is an amenable number.

102021111002021 is a deficient number, since it is larger than the sum of its proper divisors (1044882914683).

102021111002021 is a wasteful number, since it uses less digits than its factorization.

102021111002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340910931.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102021111002021 its reverse (120200111120201), we get a palindrome (222221222122222).

The spelling of 102021111002021 in words is "one hundred two trillion, twenty-one billion, one hundred eleven million, two thousand, twenty-one".