2102111212112 has 10 divisors (see below), whose sum is σ = 4072840473498. Its totient is φ = 1051055606048.

The previous prime is 2102111212067. The next prime is 2102111212171. The reversal of 2102111212112 is 2112121112012.

It can be written as a sum of positive squares in only one way, i.e., 2092142387776 + 9968824336 = 1446424^2 + 99844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65690975363 + ... + 65690975394.

Almost surely, 2^{2102111212112} is an apocalyptic number.

It is an amenable number.

2102111212112 is a deficient number, since it is larger than the sum of its proper divisors (1970729261386).

2102111212112 is a wasteful number, since it uses less digits than its factorization.

2102111212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131381950765 (or 131381950759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2102111212112 its reverse (2112121112012), we get a palindrome (4214232324124).

The spelling of 2102111212112 in words is "two trillion, one hundred two billion, one hundred eleven million, two hundred twelve thousand, one hundred twelve".