1212212021010 has 32 divisors (see below), whose sum is σ = 2917236148992. Its totient is φ = 322375728000.

The previous prime is 1212212021003. The next prime is 1212212021071. The reversal of 1212212021010 is 101202122121.

It is a super-2 number, since 2×1212212021010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55039491 + ... + 55061510.

It is an arithmetic number, because the mean of its divisors is an integer number (91163629656).

Almost surely, 2^{1212212021010} is an apocalyptic number.

1212212021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212212021010 is an abundant number, since it is smaller than the sum of its proper divisors (1705024127982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212212021010 is a wasteful number, since it uses less digits than its factorization.

1212212021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110101378.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212212021010 its reverse (101202122121), we get a palindrome (1313414143131).

The spelling of 1212212021010 in words is "one trillion, two hundred twelve billion, two hundred twelve million, twenty-one thousand, ten".