1021112120001 has 16 divisors (see below), whose sum is σ = 1381898320704. Its totient is φ = 670535061504.

The previous prime is 1021112119999. The next prime is 1021112120003. The reversal of 1021112120001 is 1000212111201.

It is an interprime number because it is at equal distance from previous prime (1021112119999) and next prime (1021112120003).

It is not a de Polignac number, because 1021112120001 - 2¹ = 1021112119999 is a prime.

It is a super-2 number, since 2×1021112120001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021112120003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2895085 + ... + 3228581.

It is an arithmetic number, because the mean of its divisors is an integer number (86368645044).

Almost surely, 2^{1021112120001} is an apocalyptic number.

It is an amenable number.

1021112120001 is a deficient number, since it is larger than the sum of its proper divisors (360786200703).

1021112120001 is a wasteful number, since it uses less digits than its factorization.

1021112120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348800.

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

Adding to 1021112120001 its reverse (1000212111201), we get a palindrome (2021324231202).

The spelling of 1021112120001 in words is "one trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand, one".