1212210020002 has 4 divisors (see below), whose sum is σ = 1818315030006. Its totient is φ = 606105010000.

The previous prime is 1212210019981. The next prime is 1212210020003. The reversal of 1212210020002 is 2000200122121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1166229366241 + 45980653761 = 1079921^2 + 214431^2 .

It is not an unprimeable number, because it can be changed into a prime (1212210020003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303052504999 + ... + 303052505002.

Almost surely, 2^{1212210020002} is an apocalyptic number.

1212210020002 is a deficient number, since it is larger than the sum of its proper divisors (606105010004).

1212210020002 is an equidigital number, since it uses as much as digits as its factorization.

1212210020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606105010003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212210020002 its reverse (2000200122121), we get a palindrome (3212410142123).

The spelling of 1212210020002 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty thousand, two".