1212020231 has 16 divisors (see below), whose sum is σ = 1255398144. Its totient is φ = 1169429184.

The previous prime is 1212020221. The next prime is 1212020263. The reversal of 1212020231 is 1320202121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1212020231 - 2¹⁴ = 1212003847 is a prime.

It is a super-2 number, since 2×1212020231² = 2937986080706586722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212020221) 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, 1666790 + ... + 1667516.

It is an arithmetic number, because the mean of its divisors is an integer number (78462384).

Almost surely, 2^1212020231 is an apocalyptic number.

1212020231 is a deficient number, since it is larger than the sum of its proper divisors (43377913).

1212020231 is a wasteful number, since it uses less digits than its factorization.

1212020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212020231 is about 34814.0809299915. The cubic root of 1212020231 is about 1066.1949545874.

Adding to 1212020231 its reverse (1320202121), we get a palindrome (2532222352).

The spelling of 1212020231 in words is "one billion, two hundred twelve million, twenty thousand, two hundred thirty-one".