201102102 has 40 divisors (see below), whose sum is σ = 453657072. Its totient is φ = 66582000.

The previous prime is 201102101. The next prime is 201102103. The reversal of 201102102 is 201201102.

It is an interprime number because it is at equal distance from previous prime (201102101) and next prime (201102103).

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 (201102101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20352 + ... + 28572.

Almost surely, 2^201102102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201102102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226828536).

201102102 is an abundant number, since it is smaller than the sum of its proper divisors (252554970).

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

201102102 is a wasteful number, since it uses less digits than its factorization.

201102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386 (or 8377 counting only the distinct ones).

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

The square root of 201102102 is about 14181.0472814951. The cubic root of 201102102 is about 585.8757691510.

Adding to 201102102 its reverse (201201102), we get a palindrome (402303204).

It can be divided in two parts, 201 and 102102, that multiplied together give a palindrome (20522502).

The spelling of 201102102 in words is "two hundred one million, one hundred two thousand, one hundred two".