1025122212 has 36 divisors (see below), whose sum is σ = 2604865536. Its totient is φ = 339916080.

The previous prime is 1025122207. The next prime is 1025122261. The reversal of 1025122212 is 2122215201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67668 + ... + 81419.

It is an arithmetic number, because the mean of its divisors is an integer number (72357376).

Almost surely, 2^1025122212 is an apocalyptic number.

1025122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1025122212 is an abundant number, since it is smaller than the sum of its proper divisors (1579743324).

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

1025122212 is a wasteful number, since it uses less digits than its factorization.

1025122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149288 (or 149283 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1025122212 is about 32017.5297610543. The cubic root of 1025122212 is about 1008.3049082319.

Adding to 1025122212 its reverse (2122215201), we get a palindrome (3147337413).

The spelling of 1025122212 in words is "one billion, twenty-five million, one hundred twenty-two thousand, two hundred twelve".