1021000021112 has 32 divisors (see below), whose sum is σ = 1976326366080. Its totient is φ = 493982945280.

The previous prime is 1021000021103. The next prime is 1021000021117. The reversal of 1021000021112 is 2111200001201.

It is a super-2 number, since 2×1021000021112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021000021093 and 1021000021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021000021117) 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, 2347328 + ... + 2748080.

It is an arithmetic number, because the mean of its divisors is an integer number (61760198940).

Almost surely, 2^{1021000021112} is an apocalyptic number.

It is an amenable number.

1021000021112 is a deficient number, since it is larger than the sum of its proper divisors (955326344968).

1021000021112 is a wasteful number, since it uses less digits than its factorization.

1021000021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411063 (or 411059 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021000021112 its reverse (2111200001201), we get a palindrome (3132200022313).

The spelling of 1021000021112 in words is "one trillion, twenty-one billion, twenty-one thousand, one hundred twelve".