102011022120 has 256 divisors, whose sum is σ = 373997606400. Its totient is φ = 21727641600.

The previous prime is 102011022109. The next prime is 102011022131. The reversal of 102011022120 is 21220110201.

It is an interprime number because it is at equal distance from previous prime (102011022109) and next prime (102011022131).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102011022096 and 102011022105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1406916 + ... + 1477644.

It is an arithmetic number, because the mean of its divisors is an integer number (1460928150).

Almost surely, 2^102011022120 is an apocalyptic number.

102011022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102011022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186998803200).

102011022120 is an abundant number, since it is smaller than the sum of its proper divisors (271986584280).

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

102011022120 is a wasteful number, since it uses less digits than its factorization.

102011022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70868 (or 70864 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102011022120 its reverse (21220110201), we get a palindrome (123231132321).

The spelling of 102011022120 in words is "one hundred two billion, eleven million, twenty-two thousand, one hundred twenty".