2100210122021 has 8 divisors (see below), whose sum is σ = 2291155797888. Its totient is φ = 1909267360000.

The previous prime is 2100210121957. The next prime is 2100210122029. The reversal of 2100210122021 is 1202210120012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2100210122021 - 2⁶ = 2100210121957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100210121987 and 2100210122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100210122029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945956 + ... + 2257266.

It is an arithmetic number, because the mean of its divisors is an integer number (286394474736).

Almost surely, 2^{2100210122021} is an apocalyptic number.

It is an amenable number.

2100210122021 is a deficient number, since it is larger than the sum of its proper divisors (190945675867).

2100210122021 is a wasteful number, since it uses less digits than its factorization.

2100210122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456923.

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

Adding to 2100210122021 its reverse (1202210120012), we get a palindrome (3302420242033).

The spelling of 2100210122021 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twenty-two thousand, twenty-one".