1211011110010 has 192 divisors, whose sum is σ = 2481139672704. Its totient is φ = 422783424000.

The previous prime is 1211011109929. The next prime is 1211011110013. The reversal of 1211011110010 is 100111101121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1211011110013) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1247178825 + ... + 1247179795.

It is an arithmetic number, because the mean of its divisors is an integer number (12922602462).

Almost surely, 2^{1211011110010} is an apocalyptic number.

1211011110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211011110010 is an abundant number, since it is smaller than the sum of its proper divisors (1270128562694).

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

1211011110010 is a wasteful number, since it uses less digits than its factorization.

1211011110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1211011110010 its reverse (100111101121), we get a palindrome (1311122211131).

The spelling of 1211011110010 in words is "one trillion, two hundred eleven billion, eleven million, one hundred ten thousand, ten".