2021211102001 has 16 divisors (see below), whose sum is σ = 2492419241088. Its totient is φ = 1596130473600.

The previous prime is 2021211101993. The next prime is 2021211102047. The reversal of 2021211102001 is 1002011121202.

It is not a de Polignac number, because 2021211102001 - 2³ = 2021211101993 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2021211102401) 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, 21268435 + ... + 21363256.

It is an arithmetic number, because the mean of its divisors is an integer number (155776202568).

Almost surely, 2^{2021211102001} is an apocalyptic number.

It is an amenable number.

2021211102001 is a deficient number, since it is larger than the sum of its proper divisors (471208139087).

2021211102001 is a wasteful number, since it uses less digits than its factorization.

2021211102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42632232.

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

Adding to 2021211102001 its reverse (1002011121202), we get a palindrome (3023222223203).

It can be divided in two parts, 2021211 and 102001, that added together give a palindrome (2123212).

The spelling of 2021211102001 in words is "two trillion, twenty-one billion, two hundred eleven million, one hundred two thousand, one".