2100121020222 has 32 divisors (see below), whose sum is σ = 4369873403904. Its totient is φ = 672124068000.

The previous prime is 2100121020181. The next prime is 2100121020223. The reversal of 2100121020222 is 2220201210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100121020223) 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, 44429029 + ... + 44476272.

It is an arithmetic number, because the mean of its divisors is an integer number (136558543872).

Almost surely, 2^{2100121020222} is an apocalyptic number.

2100121020222 is an abundant number, since it is smaller than the sum of its proper divisors (2269752383682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100121020222 is a wasteful number, since it uses less digits than its factorization.

2100121020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88905464.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2100121020222 its reverse (2220201210012), we get a palindrome (4320322230234).

The spelling of 2100121020222 in words is "two trillion, one hundred billion, one hundred twenty-one million, twenty thousand, two hundred twenty-two".