1212020221002 has 16 divisors (see below), whose sum is σ = 2426373505920. Its totient is φ = 403617896352.

The previous prime is 1212020220997. The next prime is 1212020221003. The reversal of 1212020221002 is 2001220202121.

It is a super-2 number, since 2×1212020221002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212020221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97204243 + ... + 97216710.

It is an arithmetic number, because the mean of its divisors is an integer number (151648344120).

Almost surely, 2^{1212020221002} is an apocalyptic number.

1212020221002 is an abundant number, since it is smaller than the sum of its proper divisors (1214353284918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212020221002 is a wasteful number, since it uses less digits than its factorization.

1212020221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194421997.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1212020221002 its reverse (2001220202121), we get a palindrome (3213240423123).

The spelling of 1212020221002 in words is "one trillion, two hundred twelve billion, twenty million, two hundred twenty-one thousand, two".