1211069952 has 60 divisors (see below), whose sum is σ = 3495243180. Its totient is φ = 403688448.

The previous prime is 1211069947. The next prime is 1211069969. The reversal of 1211069952 is 2599601121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126802 + ... + 136017.

It is an arithmetic number, because the mean of its divisors is an integer number (58254053).

Almost surely, 2^1211069952 is an apocalyptic number.

1211069952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211069952 is an abundant number, since it is smaller than the sum of its proper divisors (2284173228).

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

1211069952 is an equidigital number, since it uses as much as digits as its factorization.

1211069952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262843 (or 262824 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 1211069952 is about 34800.4303421667. The cubic root of 1211069952 is about 1065.9162332815.

Subtracting 1211069952 from its reverse (2599601121), we obtain a square (1388531169 = 37263²).

The spelling of 1211069952 in words is "one billion, two hundred eleven million, sixty-nine thousand, nine hundred fifty-two".