1201111011010 has 16 divisors (see below), whose sum is σ = 2255999812416. Its totient is φ = 459555517168.

The previous prime is 1201111011007. The next prime is 1201111011047. The reversal of 1201111011010 is 101101111021.

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, 2611110664 + ... + 2611111123.

It is an arithmetic number, because the mean of its divisors is an integer number (140999988276).

Almost surely, 2^{1201111011010} is an apocalyptic number.

1201111011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201111011010 is a deficient number, since it is larger than the sum of its proper divisors (1054888801406).

1201111011010 is a wasteful number, since it uses less digits than its factorization.

1201111011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222221817.

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

Adding to 1201111011010 its reverse (101101111021), we get a palindrome (1302212122031).

The spelling of 1201111011010 in words is "one trillion, two hundred one billion, one hundred eleven million, eleven thousand, ten".