220002001020 has 48 divisors (see below), whose sum is σ = 684450671520.
Its totient is φ = 58667200128.
The previous prime is 220002001007. The next prime is 220002001049. The reversal of 220002001020 is 20100200022.
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 = 220002000993 and 220002001011.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203705017 + ... + 203706096.
It is an arithmetic number, because the mean of its divisors is an integer number (14259388990).
Almost surely, 2220002001020 is an apocalyptic number.
220002001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
220002001020 is an abundant number, since it is smaller than the sum of its proper divisors (464448670500).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220002001020 is a wasteful number, since it uses less digits than its factorization.
220002001020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 407411131 (or 407411123 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
Adding to 220002001020 its reverse (20100200022), we get a palindrome (240102201042).
The spelling of 220002001020 in words is "two hundred twenty billion, two million, one thousand, twenty".