1210211211011 has 8 divisors (see below), whose sum is σ = 1322405428224. Its totient is φ = 1098379496520.

The previous prime is 1210211211007. The next prime is 1210211211017. The reversal of 1210211211011 is 1101121120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210211211011 - 2² = 1210211211007 is a prime.

It is a super-2 number, since 2×1210211211011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210211211017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90618695 + ... + 90632048.

It is an arithmetic number, because the mean of its divisors is an integer number (165300678528).

Almost surely, 2^{1210211211011} is an apocalyptic number.

1210211211011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210211211011 is a deficient number, since it is larger than the sum of its proper divisors (112194217213).

1210211211011 is a wasteful number, since it uses less digits than its factorization.

1210211211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181251361.

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

Adding to 1210211211011 its reverse (1101121120121), we get a palindrome (2311332331132).

The spelling of 1210211211011 in words is "one trillion, two hundred ten billion, two hundred eleven million, two hundred eleven thousand, eleven".