2101002120221 has 32 divisors (see below), whose sum is σ = 2365914303360. Its totient is φ = 1853996691456.

The previous prime is 2101002120209. The next prime is 2101002120229. The reversal of 2101002120221 is 1220212001012.

It is a cyclic number.

It is not a de Polignac number, because 2101002120221 - 2⁶ = 2101002120157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101002120196 and 2101002120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101002120229) 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, 24667310 + ... + 24752336.

It is an arithmetic number, because the mean of its divisors is an integer number (73934821980).

Almost surely, 2^{2101002120221} is an apocalyptic number.

It is an amenable number.

2101002120221 is a deficient number, since it is larger than the sum of its proper divisors (264912183139).

2101002120221 is a wasteful number, since it uses less digits than its factorization.

2101002120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85853.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101002120221 its reverse (1220212001012), we get a palindrome (3321214121233).

The spelling of 2101002120221 in words is "two trillion, one hundred one billion, two million, one hundred twenty thousand, two hundred twenty-one".