1021261060 has 24 divisors (see below), whose sum is σ = 2270804760. Its totient is φ = 384474624.

The previous prime is 1021261057. The next prime is 1021261067. The reversal of 1021261060 is 601621201.

It can be written as a sum of positive squares in 4 ways, for example, as 201469636 + 819791424 = 14194^2 + 28632^2 .

It is not an unprimeable number, because it can be changed into a prime (1021261067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501515 + ... + 1502194.

It is an arithmetic number, because the mean of its divisors is an integer number (94616865).

Almost surely, 2^1021261060 is an apocalyptic number.

1021261060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021261060 is an abundant number, since it is smaller than the sum of its proper divisors (1249543700).

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

1021261060 is a wasteful number, since it uses less digits than its factorization.

1021261060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003735 (or 3003733 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1021261060 is about 31957.1754070975. The cubic root of 1021261060 is about 1007.0373791204.

Adding to 1021261060 its reverse (601621201), we get a palindrome (1622882261).

The spelling of 1021261060 in words is "one billion, twenty-one million, two hundred sixty-one thousand, sixty".