2111002122021 has 32 divisors (see below), whose sum is σ = 3226291181568. Its totient is φ = 1216260418560.

The previous prime is 2111002122013. The next prime is 2111002122029. The reversal of 2111002122021 is 1202212001112.

It is an interprime number because it is at equal distance from previous prime (2111002122013) and next prime (2111002122029).

It is not a de Polignac number, because 2111002122021 - 2³ = 2111002122013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111002122029) 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, 8208486 + ... + 8461751.

It is an arithmetic number, because the mean of its divisors is an integer number (100821599424).

Almost surely, 2^{2111002122021} is an apocalyptic number.

It is an amenable number.

2111002122021 is a deficient number, since it is larger than the sum of its proper divisors (1115289059547).

2111002122021 is a wasteful number, since it uses less digits than its factorization.

2111002122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16670461.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2111002122021 its reverse (1202212001112), we get a palindrome (3313214123133).

The spelling of 2111002122021 in words is "two trillion, one hundred eleven billion, two million, one hundred twenty-two thousand, twenty-one".