102211420 has 24 divisors (see below), whose sum is σ = 214911648. Its totient is φ = 40833600.

The previous prime is 102211409. The next prime is 102211441. The reversal of 102211420 is 24112201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102211420.

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, 16105 + ... + 21535.

It is an arithmetic number, because the mean of its divisors is an integer number (8954652).

Almost surely, 2^102211420 is an apocalyptic number.

102211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102211420 is an abundant number, since it is smaller than the sum of its proper divisors (112700228).

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

102211420 is a wasteful number, since it uses less digits than its factorization.

102211420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381 (or 6379 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 102211420 is about 10109.9663698748. The cubic root of 102211420 is about 467.5554682677. Note that the first 3 decimals are identical.

Adding to 102211420 its reverse (24112201), we get a palindrome (126323621).

The spelling of 102211420 in words is "one hundred two million, two hundred eleven thousand, four hundred twenty".