1202222421 has 12 divisors (see below), whose sum is σ = 1737304972. Its totient is φ = 801130176.

The previous prime is 1202222393. The next prime is 1202222467. The reversal of 1202222421 is 1242222021.

1202222421 is a `hidden beast` number, since 1 + 20 + 2 + 222 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 164480625 + 1037741796 = 12825^2 + 32214^2 .

It is not a de Polignac number, because 1202222421 - 2¹⁹ = 1201698133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202222394 and 1202222403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202222471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6706 + ... + 49491.

Almost surely, 2^1202222421 is an apocalyptic number.

It is an amenable number.

1202222421 is a deficient number, since it is larger than the sum of its proper divisors (535082551).

1202222421 is a wasteful number, since it uses less digits than its factorization.

1202222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58580 (or 58577 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1202222421 is about 34673.0791969793. The cubic root of 1202222421 is about 1063.3141853670.

Adding to 1202222421 its reverse (1242222021), we get a palindrome (2444444442).

It can be divided in two parts, 12022 and 22421, that added together give a palindrome (34443).

The spelling of 1202222421 in words is "one billion, two hundred two million, two hundred twenty-two thousand, four hundred twenty-one".