1211302470 has 64 divisors (see below), whose sum is σ = 3338297856. Its totient is φ = 275546880.

The previous prime is 1211302457. The next prime is 1211302481. The reversal of 1211302470 is 742031121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30642 + ... + 57978.

It is an arithmetic number, because the mean of its divisors is an integer number (52160904).

Almost surely, 2^1211302470 is an apocalyptic number.

1211302470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211302470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669148928).

1211302470 is an abundant number, since it is smaller than the sum of its proper divisors (2126995386).

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

1211302470 is a wasteful number, since it uses less digits than its factorization.

1211302470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27565.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1211302470 is about 34803.7709163820. The cubic root of 1211302470 is about 1065.9844453752.

Adding to 1211302470 its reverse (742031121), we get a palindrome (1953333591).

The spelling of 1211302470 in words is "one billion, two hundred eleven million, three hundred two thousand, four hundred seventy".