212121302123002 has 4 divisors (see below), whose sum is σ = 318181953184506. Its totient is φ = 106060651061500.

The previous prime is 212121302122991. The next prime is 212121302123023. The reversal of 212121302123002 is 200321203121212.

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., 152019751277641 + 60101550845361 = 12329629^2 + 7752519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030325530749 + ... + 53030325530752.

Almost surely, 2^{212121302123002} is an apocalyptic number.

212121302123002 is a deficient number, since it is larger than the sum of its proper divisors (106060651061504).

212121302123002 is a wasteful number, since it uses less digits than its factorization.

212121302123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106060651061503.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 212121302123002 its reverse (200321203121212), we get a palindrome (412442505244214).

The spelling of 212121302123002 in words is "two hundred twelve trillion, one hundred twenty-one billion, three hundred two million, one hundred twenty-three thousand, two".