1212202222012 has 36 divisors (see below), whose sum is σ = 2247393977136. Its totient is φ = 572017599360.

The previous prime is 1212202222001. The next prime is 1212202222013. The reversal of 1212202222012 is 2102222022121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212202222013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1216189 + ... + 1975732.

It is an arithmetic number, because the mean of its divisors is an integer number (62427610476).

Almost surely, 2^{1212202222012} is an apocalyptic number.

It is an amenable number.

1212202222012 is a deficient number, since it is larger than the sum of its proper divisors (1035191755124).

1212202222012 is a wasteful number, since it uses less digits than its factorization.

1212202222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192226 (or 3192205 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212202222012 its reverse (2102222022121), we get a palindrome (3314424244133).

The spelling of 1212202222012 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred twenty-two thousand, twelve".