1212101111210 has 32 divisors (see below), whose sum is σ = 2383662555072. Its totient is φ = 440109089280.

The previous prime is 1212101111209. The next prime is 1212101111219. The reversal of 1212101111210 is 121111012121.

It is not an unprimeable number, because it can be changed into a prime (1212101111219) 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, 8112524 + ... + 8260583.

It is an arithmetic number, because the mean of its divisors is an integer number (74489454846).

Almost surely, 2^{1212101111210} is an apocalyptic number.

1212101111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212101111210 is a deficient number, since it is larger than the sum of its proper divisors (1171561443862).

1212101111210 is a wasteful number, since it uses less digits than its factorization.

1212101111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16373798.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1212101111210 its reverse (121111012121), we get a palindrome (1333212123331).

The spelling of 1212101111210 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred eleven thousand, two hundred ten".