1211214534628 has 18 divisors (see below), whose sum is σ = 2465686731606. Its totient is φ = 519091943328.

The previous prime is 1211214534623. The next prime is 1211214534637. The reversal of 1211214534628 is 8264354121121.

It can be written as a sum of positive squares in only one way, i.e., 727213261824 + 484001272804 = 852768^2 + 695702^2 .

It is a super-2 number, since 2×1211214534628² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211214534623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3089832801 + ... + 3089833192.

Almost surely, 2^{1211214534628} is an apocalyptic number.

It is an amenable number.

1211214534628 is an abundant number, since it is smaller than the sum of its proper divisors (1254472196978).

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

1211214534628 is a wasteful number, since it uses less digits than its factorization.

1211214534628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179666011 (or 6179666002 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

Adding to 1211214534628 its reverse (8264354121121), we get a palindrome (9475568655749).

The spelling of 1211214534628 in words is "one trillion, two hundred eleven billion, two hundred fourteen million, five hundred thirty-four thousand, six hundred twenty-eight".