1022012420 has 48 divisors (see below), whose sum is σ = 2521447488. Its totient is φ = 343052160.

The previous prime is 1022012419. The next prime is 1022012423. The reversal of 1022012420 is 242102201.

It is a junction number, because it is equal to n+sod(n) for n = 1022012395 and 1022012404.

It is not an unprimeable number, because it can be changed into a prime (1022012423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175814 + ... + 181533.

It is an arithmetic number, because the mean of its divisors is an integer number (52530156).

Almost surely, 2^1022012420 is an apocalyptic number.

1022012420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022012420 is an abundant number, since it is smaller than the sum of its proper divisors (1499435068).

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

1022012420 is a wasteful number, since it uses less digits than its factorization.

1022012420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357380 (or 357378 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1022012420 is about 31968.9289779936. The cubic root of 1022012420 is about 1007.2842837076.

Adding to 1022012420 its reverse (242102201), we get a palindrome (1264114621).

The spelling of 1022012420 in words is "one billion, twenty-two million, twelve thousand, four hundred twenty".