1021123122 has 96 divisors (see below), whose sum is σ = 2272644864. Its totient is φ = 305510400.

The previous prime is 1021123121. The next prime is 1021123127. The reversal of 1021123122 is 2213211201.

It is not an unprimeable number, because it can be changed into a prime (1021123121) 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, 3767847 + ... + 3768117.

It is an arithmetic number, because the mean of its divisors is an integer number (23673384).

Almost surely, 2^1021123122 is an apocalyptic number.

1021123122 is an abundant number, since it is smaller than the sum of its proper divisors (1251521742).

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

1021123122 is a wasteful number, since it uses less digits than its factorization.

1021123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1021123122 is about 31955.0171647583. The cubic root of 1021123122 is about 1006.9920381259.

Adding to 1021123122 its reverse (2213211201), we get a palindrome (3234334323).

It can be divided in two parts, 10211 and 23122, that added together give a palindrome (33333).

The spelling of 1021123122 in words is "one billion, twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".