212021514151 has 4 divisors (see below), whose sum is σ = 212367389992. Its totient is φ = 211675638312.

The previous prime is 212021514127. The next prime is 212021514167. The reversal of 212021514151 is 151415120212.

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 212021514151 - 2¹⁵ = 212021481383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021514251) 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, 172937001 + ... + 172938226.

It is an arithmetic number, because the mean of its divisors is an integer number (53091847498).

Almost surely, 2^212021514151 is an apocalyptic number.

212021514151 is a deficient number, since it is larger than the sum of its proper divisors (345875841).

212021514151 is an equidigital number, since it uses as much as digits as its factorization.

212021514151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345875840.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 212021514151 its reverse (151415120212), we get a palindrome (363436634363).

The spelling of 212021514151 in words is "two hundred twelve billion, twenty-one million, five hundred fourteen thousand, one hundred fifty-one".