1211422010 has 16 divisors (see below), whose sum is σ = 2180984616. Its totient is φ = 484474368.

The previous prime is 1211421979. The next prime is 1211422019. The reversal of 1211422010 is 102241121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 741963121 + 469458889 = 27239^2 + 21667^2 .

It is a super-3 number, since 3×1211422010³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211422019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67334 + ... + 83406.

Almost surely, 2^1211422010 is an apocalyptic number.

1211422010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211422010 is a deficient number, since it is larger than the sum of its proper divisors (969562606).

1211422010 is a wasteful number, since it uses less digits than its factorization.

1211422010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23617.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211422010 is about 34805.4882166592. The cubic root of 1211422010 is about 1066.0195105474.

Adding to 1211422010 its reverse (102241121), we get a palindrome (1313663131).

The spelling of 1211422010 in words is "one billion, two hundred eleven million, four hundred twenty-two thousand, ten".