212005445553551 has 8 divisors (see below), whose sum is σ = 228345139858080. Its totient is φ = 195670263121632.

The previous prime is 212005445553527. The next prime is 212005445553563. The reversal of 212005445553551 is 155355544500212.

212005445553551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212005445553551 - 2¹⁴ = 212005445537167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212005445553496 and 212005445553505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212005445553751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127870555 + ... + 1128058508.

It is an arithmetic number, because the mean of its divisors is an integer number (28543142482260).

Almost surely, 2^{212005445553551} is an apocalyptic number.

212005445553551 is a deficient number, since it is larger than the sum of its proper divisors (16339694304529).

212005445553551 is a wasteful number, since it uses less digits than its factorization.

212005445553551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255936305.

The product of its (nonzero) digits is 3000000, while the sum is 47.

The spelling of 212005445553551 in words is "two hundred twelve trillion, five billion, four hundred forty-five million, five hundred fifty-three thousand, five hundred fifty-one".