102022020 has 144 divisors (see below), whose sum is σ = 340179840. Its totient is φ = 24634368.

The previous prime is 102022009. The next prime is 102022027. The reversal of 102022020 is 20220201.

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

It is a junction number, because it is equal to n+sod(n) for n = 102021993 and 102022011.

It is not an unprimeable number, because it can be changed into a prime (102022027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78012 + ... + 79308.

It is an arithmetic number, because the mean of its divisors is an integer number (2362360).

Almost surely, 2^102022020 is an apocalyptic number.

102022020 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 102022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170089920).

102022020 is an abundant number, since it is smaller than the sum of its proper divisors (238157820).

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

102022020 is a wasteful number, since it uses less digits than its factorization.

102022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 102022020 is about 10100.5950319771. The cubic root of 102022020 is about 467.2664928603.

Adding to 102022020 its reverse (20220201), we get a palindrome (122242221).

The spelling of 102022020 in words is "one hundred two million, twenty-two thousand, twenty".