1210121011112 has 64 divisors (see below), whose sum is σ = 2528729658000. Its totient is φ = 539054014464.

The previous prime is 1210121011103. The next prime is 1210121011123. The reversal of 1210121011112 is 2111101210121.

It can be written as a sum of positive squares in 8 ways, for example, as 44312776036 + 1165808235076 = 210506^2 + 1079726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8035418 + ... + 8184630.

Almost surely, 2^{1210121011112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210121011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264364829000).

1210121011112 is an abundant number, since it is smaller than the sum of its proper divisors (1318608646888).

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

1210121011112 is a wasteful number, since it uses less digits than its factorization.

1210121011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151950 (or 151946 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1210121011112 its reverse (2111101210121), we get a palindrome (3321222221233).

The spelling of 1210121011112 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, eleven thousand, one hundred twelve".