1001022121112 has 16 divisors (see below), whose sum is σ = 2021294667840. Its totient is φ = 462010209696.

The previous prime is 1001022121109. The next prime is 1001022121129. The reversal of 1001022121112 is 2111212201001.

It is a super-2 number, since 2×1001022121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4812606248 + ... + 4812606455.

It is an arithmetic number, because the mean of its divisors is an integer number (126330916740).

Almost surely, 2^{1001022121112} is an apocalyptic number.

It is an amenable number.

1001022121112 is an abundant number, since it is smaller than the sum of its proper divisors (1020272546728).

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

1001022121112 is a wasteful number, since it uses less digits than its factorization.

1001022121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625212722 (or 9625212718 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001022121112 its reverse (2111212201001), we get a palindrome (3112234322113).

The spelling of 1001022121112 in words is "one trillion, one billion, twenty-two million, one hundred twenty-one thousand, one hundred twelve".