1020112010001 has 36 divisors (see below), whose sum is σ = 1788590374272. Its totient is φ = 557576745264.

The previous prime is 1020112009999. The next prime is 1020112010051. The reversal of 1020112010001 is 1000102110201.

It is a happy number.

It is not a de Polignac number, because 1020112010001 - 2¹ = 1020112009999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1020112010051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50276361 + ... + 50296646.

It is an arithmetic number, because the mean of its divisors is an integer number (49683065952).

Almost surely, 2^{1020112010001} is an apocalyptic number.

It is an amenable number.

1020112010001 is a deficient number, since it is larger than the sum of its proper divisors (768478364271).

1020112010001 is a wasteful number, since it uses less digits than its factorization.

1020112010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100573050 (or 100573040 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1020112010001 its reverse (1000102110201), we get a palindrome (2020214120202).

The spelling of 1020112010001 in words is "one trillion, twenty billion, one hundred twelve million, ten thousand, one".