1212202021010 has 32 divisors (see below), whose sum is σ = 2263255449840. Its totient is φ = 466905616128.

The previous prime is 1212202021007. The next prime is 1212202021013. The reversal of 1212202021010 is 101202022121.

It is an interprime number because it is at equal distance from previous prime (1212202021007) and next prime (1212202021013).

It can be written as a sum of positive squares in 8 ways, for example, as 533158451329 + 679043569681 = 730177^2 + 824041^2 .

It is not an unprimeable number, because it can be changed into a prime (1212202021013) 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, 5495057 + ... + 5711396.

Almost surely, 2^{1212202021010} is an apocalyptic number.

1212202021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212202021010 is a deficient number, since it is larger than the sum of its proper divisors (1051053428830).

1212202021010 is a wasteful number, since it uses less digits than its factorization.

1212202021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206862.

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

Adding to 1212202021010 its reverse (101202022121), we get a palindrome (1313404043131).

The spelling of 1212202021010 in words is "one trillion, two hundred twelve billion, two hundred two million, twenty-one thousand, ten".