212020557 has 8 divisors (see below), whose sum is σ = 323078976. Its totient is φ = 121154592.

The previous prime is 212020547. The next prime is 212020561. The reversal of 212020557 is 755020212.

212020557 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 212020557 - 2⁸ = 212020301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020507) 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, 5048088 + ... + 5048129.

It is an arithmetic number, because the mean of its divisors is an integer number (40384872).

Almost surely, 2^212020557 is an apocalyptic number.

It is an amenable number.

212020557 is a deficient number, since it is larger than the sum of its proper divisors (111058419).

212020557 is a wasteful number, since it uses less digits than its factorization.

212020557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096227.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 212020557 is about 14560.9256917272. The cubic root of 212020557 is about 596.2924680887.

Adding to 212020557 its reverse (755020212), we get a palindrome (967040769).

The spelling of 212020557 in words is "two hundred twelve million, twenty thousand, five hundred fifty-seven".