2100212121010 has 16 divisors (see below), whose sum is σ = 3784084462872. Its totient is φ = 839262038400.

The previous prime is 2100212120927. The next prime is 2100212121023. The reversal of 2100212121010 is 101212120012.

It can be written as a sum of positive squares in 4 ways, for example, as 2034072111681 + 66140009329 = 1426209^2 + 257177^2 .

It is a super-3 number, since 3×2100212121010³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102840531 + ... + 102860950.

Almost surely, 2^{2100212121010} is an apocalyptic number.

2100212121010 is a deficient number, since it is larger than the sum of its proper divisors (1683872341862).

2100212121010 is a wasteful number, since it uses less digits than its factorization.

2100212121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205702509.

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

Adding to 2100212121010 its reverse (101212120012), we get a palindrome (2201424241022).

It can be divided in two parts, 2100212 and 121010, that added together give a palindrome (2221222).

The spelling of 2100212121010 in words is "two trillion, one hundred billion, two hundred twelve million, one hundred twenty-one thousand, ten".