1002021212101 has 16 divisors (see below), whose sum is σ = 1237274034304. Its totient is φ = 790225533504.

The previous prime is 1002021212099. The next prime is 1002021212123. The reversal of 1002021212101 is 1012121202001.

It is a cyclic number.

It is not a de Polignac number, because 1002021212101 - 2¹ = 1002021212099 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021216101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17905650 + ... + 17961523.

It is an arithmetic number, because the mean of its divisors is an integer number (77329627144).

Almost surely, 2^{1002021212101} is an apocalyptic number.

It is an amenable number.

1002021212101 is a deficient number, since it is larger than the sum of its proper divisors (235252822203).

1002021212101 is a wasteful number, since it uses less digits than its factorization.

1002021212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35867500.

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

Adding to 1002021212101 its reverse (1012121202001), we get a palindrome (2014142414102).

The spelling of 1002021212101 in words is "one trillion, two billion, twenty-one million, two hundred twelve thousand, one hundred one".