1421100221429 has 32 divisors (see below), whose sum is σ = 1664478720000. Its totient is φ = 1188141989760.

The previous prime is 1421100221423. The next prime is 1421100221449. The reversal of 1421100221429 is 9241220011241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1421100221429 - 2²⁰ = 1421099172853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421100221423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157913072 + ... + 157922070.

It is an arithmetic number, because the mean of its divisors is an integer number (52014960000).

Almost surely, 2^{1421100221429} is an apocalyptic number.

It is an amenable number.

1421100221429 is a deficient number, since it is larger than the sum of its proper divisors (243378498571).

1421100221429 is a wasteful number, since it uses less digits than its factorization.

1421100221429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11993.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 1421100221429 in words is "one trillion, four hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, four hundred twenty-nine".