1012011421 has 16 divisors (see below), whose sum is σ = 1075320000. Its totient is φ = 949753728.

The previous prime is 1012011401. The next prime is 1012011437. The reversal of 1012011421 is 1241102101.

It is a cyclic number.

It is not a de Polignac number, because 1012011421 - 2²⁵ = 978456989 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 (1012011401) 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, 1639905 + ... + 1640521.

It is an arithmetic number, because the mean of its divisors is an integer number (67207500).

Almost surely, 2^1012011421 is an apocalyptic number.

It is an amenable number.

1012011421 is a deficient number, since it is larger than the sum of its proper divisors (63308579).

1012011421 is a wasteful number, since it uses less digits than its factorization.

1012011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1012011421 is about 31812.1269486968. The cubic root of 1012011421 is about 1003.9878826519.

Adding to 1012011421 its reverse (1241102101), we get a palindrome (2253113522).

The spelling of 1012011421 in words is "one billion, twelve million, eleven thousand, four hundred twenty-one".