1201212110 has 64 divisors (see below), whose sum is σ = 2628218880. Its totient is φ = 386104320.

The previous prime is 1201212109. The next prime is 1201212127. The reversal of 1201212110 is 112121021.

It is a junction number, because it is equal to n+sod(n) for n = 1201212091 and 1201212100.

It is a congruent number.

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, 124355 + ... + 133665.

It is an arithmetic number, because the mean of its divisors is an integer number (41065920).

Almost surely, 2^1201212110 is an apocalyptic number.

1201212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201212110 is an abundant number, since it is smaller than the sum of its proper divisors (1427006770).

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

1201212110 is a wasteful number, since it uses less digits than its factorization.

1201212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1201212110 is about 34658.5070365127. The cubic root of 1201212110 is about 1063.0162429703.

Adding to 1201212110 its reverse (112121021), we get a palindrome (1313333131).

The spelling of 1201212110 in words is "one billion, two hundred one million, two hundred twelve thousand, one hundred ten".