1021423041111 has 16 divisors (see below), whose sum is σ = 1485748402560. Its totient is φ = 619026700320.

The previous prime is 1021423041061. The next prime is 1021423041211. The reversal of 1021423041111 is 1111403241201.

It is not a de Polignac number, because 1021423041111 - 2¹³ = 1021423032919 is a prime.

It is a super-2 number, since 2×1021423041111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021423041211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792921 + ... + 1634493.

It is an arithmetic number, because the mean of its divisors is an integer number (92859275160).

Almost surely, 2^{1021423041111} is an apocalyptic number.

1021423041111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021423041111 is a deficient number, since it is larger than the sum of its proper divisors (464325361449).

1021423041111 is a wasteful number, since it uses less digits than its factorization.

1021423041111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878366.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1021423041111 its reverse (1111403241201), we get a palindrome (2132826282312).

The spelling of 1021423041111 in words is "one trillion, twenty-one billion, four hundred twenty-three million, forty-one thousand, one hundred eleven".