211020102 has 24 divisors (see below), whose sum is σ = 469568736. Its totient is φ = 68438736.

The previous prime is 211020091. The next prime is 211020107. The reversal of 211020102 is 201020112.

211020102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157758 + ... + 159089.

It is an arithmetic number, because the mean of its divisors is an integer number (19565364).

Almost surely, 2^211020102 is an apocalyptic number.

211020102 is an abundant number, since it is smaller than the sum of its proper divisors (258548634).

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

211020102 is a wasteful number, since it uses less digits than its factorization.

211020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316892 (or 316889 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 211020102 is about 14526.5309692301. The cubic root of 211020102 is about 595.3530865709.

Adding to 211020102 its reverse (201020112), we get a palindrome (412040214).

The spelling of 211020102 in words is "two hundred eleven million, twenty thousand, one hundred two".