1202112021 has 16 divisors (see below), whose sum is σ = 1749155328. Its totient is φ = 728290800.

The previous prime is 1202112019. The next prime is 1202112029.

1202112021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1202112021 - 2¹ = 1202112019 is a prime.

It is a super-2 number, since 2×1202112021² = 2890146622065408882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202111988 and 1202112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202112029) 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, 127686 + ... + 136776.

It is an arithmetic number, because the mean of its divisors is an integer number (109322208).

Almost surely, 2^1202112021 is an apocalyptic number.

1202112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202112021 is a deficient number, since it is larger than the sum of its proper divisors (547043307).

1202112021 is a wasteful number, since it uses less digits than its factorization.

1202112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13112.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1202112021 is about 34671.4871472223. The cubic root of 1202112021 is about 1063.2816363485.

It can be divided in two parts, 12021 and 12021, that added together give a palindrome (24042).

The spelling of 1202112021 in words is "one billion, two hundred two million, one hundred twelve thousand, twenty-one".