1021111110010 has 16 divisors (see below), whose sum is σ = 1838745076896. Its totient is φ = 408278870928.

The previous prime is 1021111110007. The next prime is 1021111110073. The reversal of 1021111110010 is 100111111201.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20670732 + ... + 20720071.

It is an arithmetic number, because the mean of its divisors is an integer number (114921567306).

Almost surely, 2^{1021111110010} is an apocalyptic number.

1021111110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021111110010 is a deficient number, since it is larger than the sum of its proper divisors (817633966886).

1021111110010 is a wasteful number, since it uses less digits than its factorization.

1021111110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41393277.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1021111110010 its reverse (100111111201), we get a palindrome (1121222221211).

It can be divided in two parts, 102111 and 1110010, that added together give a palindrome (1212121).

The spelling of 1021111110010 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred ten thousand, ten".