2100211122021 has 8 divisors (see below), whose sum is σ = 2804231120160. Its totient is φ = 1398165935952.

The previous prime is 2100211122007. The next prime is 2100211122041. The reversal of 2100211122021 is 1202211120012.

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

It is not a de Polignac number, because 2100211122021 - 2¹⁴ = 2100211105637 is a prime.

It is a super-2 number, since 2×2100211122021² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100211122041) 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, 493700535 + ... + 493704788.

It is an arithmetic number, because the mean of its divisors is an integer number (350528890020).

Almost surely, 2^{2100211122021} is an apocalyptic number.

It is an amenable number.

2100211122021 is a deficient number, since it is larger than the sum of its proper divisors (704019998139).

2100211122021 is an equidigital number, since it uses as much as digits as its factorization.

2100211122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987406035.

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

Adding to 2100211122021 its reverse (1202211120012), we get a palindrome (3302422242033).

The spelling of 2100211122021 in words is "two trillion, one hundred billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".