1111111002021 has 8 divisors (see below), whose sum is σ = 1482066680544. Its totient is φ = 740447995760.

The previous prime is 1111111002017. The next prime is 1111111002061. The reversal of 1111111002021 is 1202001111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111111002021 - 2² = 1111111002017 is a prime.

It is a super-2 number, since 2×1111111002021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111111001988 and 1111111002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111111002011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73159206 + ... + 73174391.

It is an arithmetic number, because the mean of its divisors is an integer number (185258335068).

Almost surely, 2^{1111111002021} is an apocalyptic number.

It is an amenable number.

1111111002021 is a deficient number, since it is larger than the sum of its proper divisors (370955678523).

1111111002021 is a wasteful number, since it uses less digits than its factorization.

1111111002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146336131.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111111002021 its reverse (1202001111111), we get a palindrome (2313112113132).

The spelling of 1111111002021 in words is "one trillion, one hundred eleven billion, one hundred eleven million, two thousand, twenty-one".