211214420 has 24 divisors (see below), whose sum is σ = 445513824. Its totient is φ = 84111776.

The previous prime is 211214401. The next prime is 211214461. The reversal of 211214420 is 24412112.

It is a super-2 number, since 2×211214420² = 89223062431872800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18722 + ... + 27801.

It is an arithmetic number, because the mean of its divisors is an integer number (18563076).

Almost surely, 2^211214420 is an apocalyptic number.

211214420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211214420 is an abundant number, since it is smaller than the sum of its proper divisors (234299404).

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

211214420 is a wasteful number, since it uses less digits than its factorization.

211214420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46759 (or 46757 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 211214420 is about 14533.2178129965. The cubic root of 211214420 is about 595.5357742671.

Adding to 211214420 its reverse (24412112), we get a palindrome (235626532).

The spelling of 211214420 in words is "two hundred eleven million, two hundred fourteen thousand, four hundred twenty".