1212222001210 has 64 divisors (see below), whose sum is σ = 2391052587264. Its totient is φ = 438829747200.

The previous prime is 1212222001171. The next prime is 1212222001219. The reversal of 1212222001210 is 121002222121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212222001219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104523132 + ... + 104534728.

It is an arithmetic number, because the mean of its divisors is an integer number (37360196676).

Almost surely, 2^{1212222001210} is an apocalyptic number.

1212222001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212222001210 is a deficient number, since it is larger than the sum of its proper divisors (1178830586054).

1212222001210 is a wasteful number, since it uses less digits than its factorization.

1212222001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212222001210 its reverse (121002222121), we get a palindrome (1333224223331).

The spelling of 1212222001210 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, one thousand, two hundred ten".