1221054332 has 6 divisors (see below), whose sum is σ = 2136845088. Its totient is φ = 610527164.

The previous prime is 1221054311. The next prime is 1221054349. The reversal of 1221054332 is 2334501221.

It is a junction number, because it is equal to n+sod(n) for n = 1221054298 and 1221054307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152631788 + ... + 152631795.

It is an arithmetic number, because the mean of its divisors is an integer number (356140848).

Almost surely, 2^1221054332 is an apocalyptic number.

It is an amenable number.

1221054332 is a deficient number, since it is larger than the sum of its proper divisors (915790756).

1221054332 is a wasteful number, since it uses less digits than its factorization.

1221054332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305263587 (or 305263585 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1221054332 is about 34943.5878524229. The cubic root of 1221054332 is about 1068.8374516541.

Adding to 1221054332 its reverse (2334501221), we get a palindrome (3555555553).

The spelling of 1221054332 in words is "one billion, two hundred twenty-one million, fifty-four thousand, three hundred thirty-two".