1201121111010 has 32 divisors (see below), whose sum is σ = 2960601227712. Its totient is φ = 311642233920.

The previous prime is 1201121111009. The next prime is 1201121111011. The reversal of 1201121111010 is 101111211021.

It is an interprime number because it is at equal distance from previous prime (1201121111009) and next prime (1201121111011).

It is not an unprimeable number, because it can be changed into a prime (1201121111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541044436 + ... + 541046655.

It is an arithmetic number, because the mean of its divisors is an integer number (92518788366).

Almost surely, 2^{1201121111010} is an apocalyptic number.

1201121111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201121111010 is an abundant number, since it is smaller than the sum of its proper divisors (1759480116702).

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

1201121111010 is a wasteful number, since it uses less digits than its factorization.

1201121111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082091138.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1201121111010 its reverse (101111211021), we get a palindrome (1302232322031).

It can be divided in two parts, 1201121 and 111010, that added together give a palindrome (1312131).

The spelling of 1201121111010 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred eleven thousand, ten".