1212021048 has 64 divisors (see below), whose sum is σ = 3543471360. Its totient is φ = 338236416.

The previous prime is 1212021047. The next prime is 1212021067. The reversal of 1212021048 is 8401202121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212021047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76665 + ... + 91112.

It is an arithmetic number, because the mean of its divisors is an integer number (55366740).

Almost surely, 2^1212021048 is an apocalyptic number.

It is an amenable number.

1212021048 is an abundant number, since it is smaller than the sum of its proper divisors (2331450312).

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

1212021048 is a wasteful number, since it uses less digits than its factorization.

1212021048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167836 (or 167832 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1212021048 is about 34814.0926637475. The cubic root of 1212021048 is about 1066.1951941546.

Adding to 1212021048 its reverse (8401202121), we get a palindrome (9613223169).

The spelling of 1212021048 in words is "one billion, two hundred twelve million, twenty-one thousand, forty-eight".