2001101021112 has 32 divisors (see below), whose sum is σ = 5004158428800. Its totient is φ = 666846223584.

The previous prime is 2001101021077. The next prime is 2001101021147. The reversal of 2001101021112 is 2111201011002.

It is an interprime number because it is at equal distance from previous prime (2001101021077) and next prime (2001101021147).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 11628438 + ... + 11799269.

It is an arithmetic number, because the mean of its divisors is an integer number (156379950900).

Almost surely, 2^{2001101021112} is an apocalyptic number.

It is an amenable number.

2001101021112 is an abundant number, since it is smaller than the sum of its proper divisors (3003057407688).

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

2001101021112 is a wasteful number, since it uses less digits than its factorization.

2001101021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23431275 (or 23431271 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2001101021112 its reverse (2111201011002), we get a palindrome (4112302032114).

The spelling of 2001101021112 in words is "two trillion, one billion, one hundred one million, twenty-one thousand, one hundred twelve".