213122031203002 has 4 divisors (see below), whose sum is σ = 319683046804506. Its totient is φ = 106561015601500.

The previous prime is 213122031202987. The next prime is 213122031203009. The reversal of 213122031203002 is 200302130221312.

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., 207896285494881 + 5225745708121 = 14418609^2 + 2285989^2 .

It is not an unprimeable number, because it can be changed into a prime (213122031203009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53280507800749 + ... + 53280507800752.

Almost surely, 2^{213122031203002} is an apocalyptic number.

213122031203002 is a deficient number, since it is larger than the sum of its proper divisors (106561015601504).

213122031203002 is a wasteful number, since it uses less digits than its factorization.

213122031203002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106561015601503.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213122031203002 its reverse (200302130221312), we get a palindrome (413424161424314).

The spelling of 213122031203002 in words is "two hundred thirteen trillion, one hundred twenty-two billion, thirty-one million, two hundred three thousand, two".