1001000202111 has 36 divisors (see below), whose sum is σ = 1789333713648. Its totient is φ = 528000100992.

The previous prime is 1001000202109. The next prime is 1001000202143. The reversal of 1001000202111 is 1112020001001.

It is a happy number.

It is not a de Polignac number, because 1001000202111 - 2¹ = 1001000202109 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001000202093 and 1001000202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000202101) 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, 46997910 + ... + 47019203.

It is an arithmetic number, because the mean of its divisors is an integer number (49703714268).

Almost surely, 2^{1001000202111} is an apocalyptic number.

1001000202111 is a deficient number, since it is larger than the sum of its proper divisors (788333511537).

1001000202111 is a wasteful number, since it uses less digits than its factorization.

1001000202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94017152 (or 94017136 counting only the distinct ones).

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

Adding to 1001000202111 its reverse (1112020001001), we get a palindrome (2113020203112).

The spelling of 1001000202111 in words is "one trillion, one billion, two hundred two thousand, one hundred eleven".