1011111212210 has 384 divisors, whose sum is σ = 2280428640000. Its totient is φ = 320477921280.

The previous prime is 1011111212141. The next prime is 1011111212231. The reversal of 1011111212210 is 122121111101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5648665901 + ... + 5648666079.

It is an arithmetic number, because the mean of its divisors is an integer number (5938616250).

Almost surely, 2^{1011111212210} is an apocalyptic number.

1011111212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011111212210 is an abundant number, since it is smaller than the sum of its proper divisors (1269317427790).

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

1011111212210 is a wasteful number, since it uses less digits than its factorization.

1011111212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 479 counting only the distinct ones).

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

Adding to 1011111212210 its reverse (122121111101), we get a palindrome (1133232323311).

The spelling of 1011111212210 in words is "one trillion, eleven billion, one hundred eleven million, two hundred twelve thousand, two hundred ten".