1011111201010 has 64 divisors (see below), whose sum is σ = 1859906168064. Its totient is φ = 395671219200.

The previous prime is 1011111200971. The next prime is 1011111201047. The reversal of 1011111201010 is 101021111101.

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 31 ways as a sum of consecutive naturals, for example, 151111765 + ... + 151118455.

It is an arithmetic number, because the mean of its divisors is an integer number (29061033876).

Almost surely, 2^{1011111201010} is an apocalyptic number.

1011111201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011111201010 is a deficient number, since it is larger than the sum of its proper divisors (848794967054).

1011111201010 is a wasteful number, since it uses less digits than its factorization.

1011111201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8419.

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

Adding to 1011111201010 its reverse (101021111101), we get a palindrome (1112132312111).

It can be divided in two parts, 1011111 and 201010, that added together give a palindrome (1212121).

The spelling of 1011111201010 in words is "one trillion, eleven billion, one hundred eleven million, two hundred one thousand, ten".