1201222121110 has 32 divisors (see below), whose sum is σ = 2360213551872. Its totient is φ = 436539504480.

The previous prime is 1201222121069. The next prime is 1201222121117. The reversal of 1201222121110 is 111212221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201222121117) 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, 3176962 + ... + 3534901.

It is an arithmetic number, because the mean of its divisors is an integer number (73756673496).

Almost surely, 2^{1201222121110} is an apocalyptic number.

1201222121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201222121110 is a deficient number, since it is larger than the sum of its proper divisors (1158991430762).

1201222121110 is a wasteful number, since it uses less digits than its factorization.

1201222121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713508.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201222121110 its reverse (111212221021), we get a palindrome (1312434342131).

It can be divided in two parts, 12012 and 22121110, that added together give a palindrome (22133122).

The spelling of 1201222121110 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred ten".