1211112101210 has 32 divisors (see below), whose sum is σ = 2378297376000. Its totient is φ = 440383360960.

The previous prime is 1211112101179. The next prime is 1211112101237. The reversal of 1211112101210 is 121012111121.

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, 2150216 + ... + 2654364.

It is an arithmetic number, because the mean of its divisors is an integer number (74321793000).

Almost surely, 2^{1211112101210} is an apocalyptic number.

1211112101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211112101210 is a deficient number, since it is larger than the sum of its proper divisors (1167185274790).

1211112101210 is a wasteful number, since it uses less digits than its factorization.

1211112101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526006.

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

Adding to 1211112101210 its reverse (121012111121), we get a palindrome (1332124212331).

The spelling of 1211112101210 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred one thousand, two hundred ten".