1021421012 has 12 divisors (see below), whose sum is σ = 1803306036. Its totient is φ = 506190720.

The previous prime is 1021421003. The next prime is 1021421083. The reversal of 1021421012 is 2101241201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 203804176 + 817616836 = 14276^2 + 28594^2 .

It is a super-3 number, since 3×1021421012³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129439 + ... + 1130342.

It is an arithmetic number, because the mean of its divisors is an integer number (150275503).

Almost surely, 2^1021421012 is an apocalyptic number.

It is an amenable number.

1021421012 is a deficient number, since it is larger than the sum of its proper divisors (781885024).

1021421012 is a wasteful number, since it uses less digits than its factorization.

1021421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259898 (or 2259896 counting only the distinct ones).

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

The square root of 1021421012 is about 31959.6779082643. The cubic root of 1021421012 is about 1007.0899511285.

Adding to 1021421012 its reverse (2101241201), we get a palindrome (3122662213).

The spelling of 1021421012 in words is "one billion, twenty-one million, four hundred twenty-one thousand, twelve".