1021200011110 has 32 divisors (see below), whose sum is σ = 1844844543360. Its totient is φ = 406995178368.

The previous prime is 1021200011089. The next prime is 1021200011141. The reversal of 1021200011110 is 111100021201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13977756 + ... + 14050624.

It is an arithmetic number, because the mean of its divisors is an integer number (57651391980).

Almost surely, 2^{1021200011110} is an apocalyptic number.

1021200011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021200011110 is a deficient number, since it is larger than the sum of its proper divisors (823644532250).

1021200011110 is a wasteful number, since it uses less digits than its factorization.

1021200011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77952.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021200011110 its reverse (111100021201), we get a palindrome (1132300032311).

The spelling of 1021200011110 in words is "one trillion, twenty-one billion, two hundred million, eleven thousand, one hundred ten".