1212111111022 has 16 divisors (see below), whose sum is σ = 2085990000480. Its totient is φ = 517454880768.

The previous prime is 1212111111007. The next prime is 1212111111023. The reversal of 1212111111022 is 2201111112121.

It is a junction number, because it is equal to n+sod(n) for n = 1212111110987 and 1212111111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212111111023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 168438747 + ... + 168445942.

It is an arithmetic number, because the mean of its divisors is an integer number (130374375030).

Almost surely, 2^{1212111111022} is an apocalyptic number.

1212111111022 is a deficient number, since it is larger than the sum of its proper divisors (873878889458).

1212111111022 is a wasteful number, since it uses less digits than its factorization.

1212111111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336884955.

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

Adding to 1212111111022 its reverse (2201111112121), we get a palindrome (3413222223143).

The spelling of 1212111111022 in words is "one trillion, two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, twenty-two".