1020001111100 has 54 divisors (see below), whose sum is σ = 2261498562120. Its totient is φ = 399319497440.

The previous prime is 1020001111093. The next prime is 1020001111169. The reversal of 1020001111100 is 11111000201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2087840 + ... + 2529639.

Almost surely, 2^{1020001111100} is an apocalyptic number.

1020001111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020001111100 is an abundant number, since it is smaller than the sum of its proper divisors (1241497451020).

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

1020001111100 is a wasteful number, since it uses less digits than its factorization.

1020001111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617587 (or 4617533 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1020001111100 its reverse (11111000201), we get a palindrome (1031112111301).

The spelling of 1020001111100 in words is "one trillion, twenty billion, one million, one hundred eleven thousand, one hundred".