1201021011112 has 32 divisors (see below), whose sum is σ = 2454357134880. Its totient is φ = 547638863040.

The previous prime is 1201021011109. The next prime is 1201021011139. The reversal of 1201021011112 is 2111101201021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1201021011092 and 1201021011101.

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, 69559314 + ... + 69576577.

It is an arithmetic number, because the mean of its divisors is an integer number (76698660465).

Almost surely, 2^{1201021011112} is an apocalyptic number.

It is an amenable number.

1201021011112 is an abundant number, since it is smaller than the sum of its proper divisors (1253336123768).

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

1201021011112 is a wasteful number, since it uses less digits than its factorization.

1201021011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139135993 (or 139135989 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201021011112 its reverse (2111101201021), we get a palindrome (3312122212133).

The spelling of 1201021011112 in words is "one trillion, two hundred one billion, twenty-one million, eleven thousand, one hundred twelve".