2021111102001 has 16 divisors (see below), whose sum is σ = 2853414641088. Its totient is φ = 1268112000000.

The previous prime is 2021111101991. The next prime is 2021111102081. The reversal of 2021111102001 is 1002011111202.

It is not a de Polignac number, because 2021111102001 - 2¹⁸ = 2021110839857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021111102081) 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, 1302201 + ... + 2395401.

It is an arithmetic number, because the mean of its divisors is an integer number (178338415068).

Almost surely, 2^{2021111102001} is an apocalyptic number.

It is an amenable number.

2021111102001 is a deficient number, since it is larger than the sum of its proper divisors (832303539087).

2021111102001 is a wasteful number, since it uses less digits than its factorization.

2021111102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129472.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2021111102001 its reverse (1002011111202), we get a palindrome (3023122213203).

The spelling of 2021111102001 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, one".