1421221010 has 32 divisors (see below), whose sum is σ = 2792314944. Its totient is φ = 516520000.

The previous prime is 1421220959. The next prime is 1421221057. The reversal of 1421221010 is 101221241.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382160 + ... + 385860.

It is an arithmetic number, because the mean of its divisors is an integer number (87259842).

Almost surely, 2^1421221010 is an apocalyptic number.

1421221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421221010 is a deficient number, since it is larger than the sum of its proper divisors (1371093934).

1421221010 is a wasteful number, since it uses less digits than its factorization.

1421221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210.

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

The square root of 1421221010 is about 37699.0850021589. The cubic root of 1421221010 is about 1124.3129329035.

Adding to 1421221010 its reverse (101221241), we get a palindrome (1522442251).

The spelling of 1421221010 in words is "one billion, four hundred twenty-one million, two hundred twenty-one thousand, ten".