1421220231101 has 8 divisors (see below), whose sum is σ = 1550627868864. Its totient is φ = 1291846893120.

The previous prime is 1421220231073. The next prime is 1421220231107. The reversal of 1421220231101 is 1011320221241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421220231101 - 2¹⁸ = 1421219968957 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 (1421220231107) 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, 8488265 + ... + 8654078.

It is an arithmetic number, because the mean of its divisors is an integer number (193828483608).

Almost surely, 2^{1421220231101} is an apocalyptic number.

1421220231101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421220231101 is a deficient number, since it is larger than the sum of its proper divisors (129407637763).

1421220231101 is a wasteful number, since it uses less digits than its factorization.

1421220231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17149891.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1421220231101 its reverse (1011320221241), we get a palindrome (2432540452342).

The spelling of 1421220231101 in words is "one trillion, four hundred twenty-one billion, two hundred twenty million, two hundred thirty-one thousand, one hundred one".