1211022121210 has 64 divisors (see below), whose sum is σ = 2482576905600. Its totient is φ = 421285536000.

The previous prime is 1211022121189. The next prime is 1211022121301. The reversal of 1211022121210 is 121212201121.

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, 1393716 + ... + 2089135.

It is an arithmetic number, because the mean of its divisors is an integer number (38790264150).

Almost surely, 2^{1211022121210} is an apocalyptic number.

1211022121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211022121210 is an abundant number, since it is smaller than the sum of its proper divisors (1271554784390).

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

1211022121210 is a wasteful number, since it uses less digits than its factorization.

1211022121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483007.

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

Adding to 1211022121210 its reverse (121212201121), we get a palindrome (1332234322331).

The spelling of 1211022121210 in words is "one trillion, two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred ten".