101220102 has 24 divisors (see below), whose sum is σ = 228846384. Its totient is φ = 32272944.

The previous prime is 101220083. The next prime is 101220107. The reversal of 101220102 is 201022101.

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 (101220107) 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, 121833 + ... + 122660.

It is an arithmetic number, because the mean of its divisors is an integer number (9535266).

Almost surely, 2^101220102 is an apocalyptic number.

101220102 is an abundant number, since it is smaller than the sum of its proper divisors (127626282).

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

101220102 is a wasteful number, since it uses less digits than its factorization.

101220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244524 (or 244521 counting only the distinct ones).

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

The square root of 101220102 is about 10060.8201454951. The cubic root of 101220102 is about 466.0389948150.

Adding to 101220102 its reverse (201022101), we get a palindrome (302242203).

The spelling of 101220102 in words is "one hundred one million, two hundred twenty thousand, one hundred two".