1212111222010 has 128 divisors (see below), whose sum is σ = 2502128724480. Its totient is φ = 419530116096.

The previous prime is 1212111222001. The next prime is 1212111222073. The reversal of 1212111222010 is 102221112121.

It is a super-2 number, since 2×1212111222010² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27049984 + ... + 27094756.

It is an arithmetic number, because the mean of its divisors is an integer number (19547880660).

Almost surely, 2^{1212111222010} is an apocalyptic number.

1212111222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212111222010 is an abundant number, since it is smaller than the sum of its proper divisors (1290017502470).

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

1212111222010 is a wasteful number, since it uses less digits than its factorization.

1212111222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45032.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212111222010 its reverse (102221112121), we get a palindrome (1314332334131).

The spelling of 1212111222010 in words is "one trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, ten".