1200121112210 has 32 divisors (see below), whose sum is σ = 2201091313392. Its totient is φ = 470966429440.

The previous prime is 1200121112137. The next prime is 1200121112249. The reversal of 1200121112210 is 122111210021.

It can be written as a sum of positive squares in 8 ways, for example, as 414417925009 + 785703187201 = 643753^2 + 886399^2 .

It is a super-2 number, since 2×1200121112210² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12777620 + ... + 12871200.

Almost surely, 2^{1200121112210} is an apocalyptic number.

1200121112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200121112210 is a deficient number, since it is larger than the sum of its proper divisors (1000970201182).

1200121112210 is a wasteful number, since it uses less digits than its factorization.

1200121112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117838.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200121112210 its reverse (122111210021), we get a palindrome (1322232322231).

The spelling of 1200121112210 in words is "one trillion, two hundred billion, one hundred twenty-one million, one hundred twelve thousand, two hundred ten".