1012212020 has 24 divisors (see below), whose sum is σ = 2165754024. Its totient is φ = 397245056.

The previous prime is 1012212017. The next prime is 1012212049. The reversal of 1012212020 is 202122101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 468203044 + 544008976 = 21638^2 + 23324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012211992 and 1012212010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476399 + ... + 478518.

It is an arithmetic number, because the mean of its divisors is an integer number (90239751).

Almost surely, 2^1012212020 is an apocalyptic number.

1012212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012212020 is an abundant number, since it is smaller than the sum of its proper divisors (1153542004).

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

1012212020 is a wasteful number, since it uses less digits than its factorization.

1012212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954979 (or 954977 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012212020 is about 31815.2796624515. The cubic root of 1012212020 is about 1004.0542144658.

Adding to 1012212020 its reverse (202122101), we get a palindrome (1214334121).

The spelling of 1012212020 in words is "one billion, twelve million, two hundred twelve thousand, twenty".