212073472121451 has 4 divisors (see below), whose sum is σ = 282764629495272. Its totient is φ = 141382314747632.

The previous prime is 212073472121449. The next prime is 212073472121579. The reversal of 212073472121451 is 154121274370212.

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

It is a cyclic number.

It is not a de Polignac number, because 212073472121451 - 2¹ = 212073472121449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212073472129451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35345578686906 + ... + 35345578686911.

It is an arithmetic number, because the mean of its divisors is an integer number (70691157373818).

Almost surely, 2^{212073472121451} is an apocalyptic number.

212073472121451 is a deficient number, since it is larger than the sum of its proper divisors (70691157373821).

212073472121451 is an equidigital number, since it uses as much as digits as its factorization.

212073472121451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70691157373820.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 212073472121451 in words is "two hundred twelve trillion, seventy-three billion, four hundred seventy-two million, one hundred twenty-one thousand, four hundred fifty-one".