1210211222212 has 24 divisors (see below), whose sum is σ = 2158288298712. Its totient is φ = 593562278400.

The previous prime is 1210211222197. The next prime is 1210211222237. The reversal of 1210211222212 is 2122221120121.

It can be written as a sum of positive squares in 4 ways, for example, as 85792753216 + 1124418468996 = 292904^2 + 1060386^2 .

It is a super-2 number, since 2×1210211222212² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1210211222212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396262 + ... + 1605442.

It is an arithmetic number, because the mean of its divisors is an integer number (89928679113).

Almost surely, 2^{1210211222212} is an apocalyptic number.

It is an amenable number.

1210211222212 is a deficient number, since it is larger than the sum of its proper divisors (948077076500).

1210211222212 is a wasteful number, since it uses less digits than its factorization.

1210211222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213959 (or 1213957 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1210211222212 its reverse (2122221120121), we get a palindrome (3332432342333).

It can be divided in two parts, 12102112 and 22212, that added together give a square (12124324 = 3482²).

The spelling of 1210211222212 in words is "one trillion, two hundred ten billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twelve".