2112121021102 has 32 divisors (see below), whose sum is σ = 3433813020000. Its totient is φ = 970469434368.

The previous prime is 2112121021097. The next prime is 2112121021103. The reversal of 2112121021102 is 2011201212112.

It is a super-2 number, since 2×2112121021102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112121021103) 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, 3756274 + ... + 4281802.

It is an arithmetic number, because the mean of its divisors is an integer number (107306656875).

Almost surely, 2^{2112121021102} is an apocalyptic number.

2112121021102 is a deficient number, since it is larger than the sum of its proper divisors (1321691998898).

2112121021102 is a wasteful number, since it uses less digits than its factorization.

2112121021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528340.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2112121021102 its reverse (2011201212112), we get a palindrome (4123322233214).

The spelling of 2112121021102 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, one hundred two".