1211112211010 has 32 divisors (see below), whose sum is σ = 2370938964912. Its totient is φ = 442752364800.

The previous prime is 1211112210967. The next prime is 1211112211033. The reversal of 1211112211010 is 101122111121.

It can be written as a sum of positive squares in 8 ways, for example, as 736938119401 + 474174091609 = 858451^2 + 688603^2 .

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, 46106909 + ... + 46133168.

Almost surely, 2^{1211112211010} is an apocalyptic number.

1211112211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211112211010 is a deficient number, since it is larger than the sum of its proper divisors (1159826753902).

1211112211010 is a wasteful number, since it uses less digits than its factorization.

1211112211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92240198.

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

Adding to 1211112211010 its reverse (101122111121), we get a palindrome (1312234322131).

The spelling of 1211112211010 in words is "one trillion, two hundred eleven billion, one hundred twelve million, two hundred eleven thousand, ten".