211122054 has 48 divisors (see below), whose sum is σ = 537408144. Its totient is φ = 59054400.

The previous prime is 211122047. The next prime is 211122071. The reversal of 211122054 is 450221112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38437 + ... + 43584.

It is an arithmetic number, because the mean of its divisors is an integer number (11196003).

Almost surely, 2^211122054 is an apocalyptic number.

211122054 is an abundant number, since it is smaller than the sum of its proper divisors (326286090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211122054 is a wasteful number, since it uses less digits than its factorization.

211122054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82053 (or 82050 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 211122054 is about 14530.0397108886. The cubic root of 211122054 is about 595.4489505271.

Adding to 211122054 its reverse (450221112), we get a palindrome (661343166).

It can be divided in two parts, 211 and 122054, that added together give a triangular number (122265 = T₄₉₄).

The spelling of 211122054 in words is "two hundred eleven million, one hundred twenty-two thousand, fifty-four".