1212222021002 has 32 divisors (see below), whose sum is σ = 1935554476032. Its totient is φ = 567418097664.

The previous prime is 1212222021001. The next prime is 1212222021011. The reversal of 1212222021002 is 2001202222121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1212222021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85318583 + ... + 85332789.

It is an arithmetic number, because the mean of its divisors is an integer number (60486077376).

Almost surely, 2^{1212222021002} is an apocalyptic number.

1212222021002 is a deficient number, since it is larger than the sum of its proper divisors (723332455030).

1212222021002 is a wasteful number, since it uses less digits than its factorization.

1212222021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27422.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212222021002 its reverse (2001202222121), we get a palindrome (3213424243123).

The spelling of 1212222021002 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, two".