211215150 has 36 divisors (see below), whose sum is σ = 567465912. Its totient is φ = 56323920.

The previous prime is 211215113. The next prime is 211215161. The reversal of 211215150 is 51512112.

It is a super-2 number, since 2×211215150² = 89223679179045000, which contains 22 as substring.

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 17 ways as a sum of consecutive naturals, for example, 234234 + ... + 235133.

It is an arithmetic number, because the mean of its divisors is an integer number (15762942).

Almost surely, 2^211215150 is an apocalyptic number.

211215150 is an abundant number, since it is smaller than the sum of its proper divisors (356250762).

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

211215150 is a wasteful number, since it uses less digits than its factorization.

211215150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469385 (or 469377 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 211215150 is about 14533.2429278534. The cubic root of 211215150 is about 595.5364603639.

Adding to 211215150 its reverse (51512112), we get a palindrome (262727262).

The spelling of 211215150 in words is "two hundred eleven million, two hundred fifteen thousand, one hundred fifty".